#how do I I find the circumventer if my y=mx+b is just constant

200 messages · Page 1 of 1 (latest)

reef dew
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I’m not sure if I’m going toward the right direction, can someone help me figure this out please?

edgy ridgeBOT
feral steeple
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i think dont go this way

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just assume a point x,y equidistant from thesse three point

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thus a circle and its radii

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so use distance formula

reef dew
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I'll show you an ex I did from in my notes

reef dew
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This what Im trying to do

feral steeple
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so you r going from the definition of circumcentre

reef dew
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Yes

feral steeple
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so this is also true

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you can proceeed with that'

reef dew
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But how do I find the circumcenter if the equation I have is just

feral steeple
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actually there are 3 methods that i m rememberingn now

reef dew
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x = number

feral steeple
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of a triangle

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?

reef dew
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Circumcenter of a triangle yes

feral steeple
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i meant that eqn

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side of traingale

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?

reef dew
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Wdym

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Like a^2 + b^2 = c^2 i cant really use py theorem

reef dew
feral steeple
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so there 3 methods

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that i know

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first definiion

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but for that you should be very clear with graph

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or image

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in your mind

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then assume a poit

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point

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and 3rd is assume general eqn of circles

reef dew
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Ye i really cant visualize this

feral steeple
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and satisfy it with 3 points

reef dew
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The waht

feral steeple
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and you cab do it with practicing questuion

reef dew
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Can I just stick to the method the note packet has

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This is already confusing

reef dew
feral steeple
feral steeple
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they are basic

reef dew
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ok

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What am i using

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Im stuck

feral steeple
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you r using definition

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without visualising the question proeprly

reef dew
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Im completely lost rn 🗿

feral steeple
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so restart

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with making a rough diagram

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for clear mindset of what to do

reef dew
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What diagram am i suppose to draw

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I thought we were just doing this mathematically

feral steeple
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wait

reef dew
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Im gonna take a nap

feral steeple
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like this

reef dew
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we do this later pls

feral steeple
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so heres a diagram

feral steeple
reef dew
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@feral steeple where were we im back

feral steeple
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just try to make a rough figure

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also

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if i m not wrong this is a right angled triangle

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so if you werre asked to find orthocentre

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then its just right angled vertex

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so no need to solve

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thus

reef dew
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We're doing it mathematically

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@feral steeple They're asking me to find 2 equations of perpendicular bisectors

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I gotta find equations

feral steeple
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give me the questions

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@reef dew

reef dew
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:/

feral steeple
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ok

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so

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see the figure

reef dew
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I have no idea what to do since i missed friday

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Ye

feral steeple
reef dew
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Wdym

feral steeple
feral steeple
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now bisector of side on y axis is

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y = 1

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right?

reef dew
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I dont know

feral steeple
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as it would be parrallel to x axis

feral steeple
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?

reef dew
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(0,4)?

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Wait no

feral steeple
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....

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do oyu know midpoint formula

reef dew
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We use (X + X2/2 , Y1 + Y2/2)

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yes

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yes

feral steeple
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so do

reef dew
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I just did

feral steeple
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x = 0+0/2 = 0

reef dew
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wait nvm

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Its (0,2)

feral steeple
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y = [3 + (-1)]/2

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bruh

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y = 2/2

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y = 1

reef dew
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Crap mybad

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ye u right

feral steeple
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divide by 2

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so

reef dew
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(0,1)

feral steeple
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now this would be parallel to x axis

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right

reef dew
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Uh i think ye

feral steeple
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it would be

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so its eqn is y = 1

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now for side parallel to x axis

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base side

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midpoint of 0,-1 and 6,-1

reef dew
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What am I suppose to look at

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Oh

reef dew
reef dew
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not the 2nd one right

reef dew
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@feral steeple Let me know when you come back

feral steeple
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yes

reef dew
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Where were we

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uh

feral steeple
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so

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heres our rough diagram

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now to find perpendicular bisectors

reef dew
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yes

feral steeple
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we can use simlpest sides

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base and height

reef dew
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Which one is the base

feral steeple
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the horizontal one

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0,-1 to 6,-1

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so cn you tell me the eqn of its perpendicular bisector

reef dew
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Its the midpoints right

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So it should be (x + x2/2, y + y2/2)

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I think

reef dew
feral steeple
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wait

reef dew
feral steeple
feral steeple
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as they are easy to solve

reef dew
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Is that our midpoint

feral steeple
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how dude

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isnt it 3,-1

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and thus the bisector is parallel to y axis

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so eqn => x = c

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here its x=3

reef dew
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Wiat whauh

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Waht

feral steeple
reef dew
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-1 + (-1)?

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= -2

feral steeple
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/2

reef dew
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Oh crap ye

feral steeple
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so the slope of base is 0 right

reef dew
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Yes horizontal slope

feral steeple
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so slope of perpendicular be x

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then x = infinity

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as its vertical

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x = tan 90

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so $y + 1 = \infty(x - 3)$

rotund owlBOT
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ᴰᴱᴬᴰ ★ ᴋɪʟʟᴇʀ ⁰⁴

reef dew
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I thought this still geometry

reef dew
feral steeple
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then $\frac{y+1}{\infty} = 0 = x-3$

rotund owlBOT
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ᴰᴱᴬᴰ ★ ᴋɪʟʟᴇʀ ⁰⁴

feral steeple
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x = 3

reef dew
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Uh

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What if i had to use others like sin cos and tan

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When should you use a specific for a specific angle

feral steeple
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slope is tan a only

feral steeple
reef dew
reef dew
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@feral steeple

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Uh real quick so im trying to find the midpoint right

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Find the coordinates of the circumcenter of the triangle with the given vertices.

D(-7,-1), E(-1,-1),\ F(-7,-9)

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So I chose DE

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Plug in values into (x + x2/2, y + y2/2)

(-7 + (-1) / 2, -1 + (-1)/2)

(-4,-1)

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<@&286206848099549185>

quick musk
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I didn’t read all of the message but have you tried using the equations of the perpendicular bisectors of the vertices

reef dew
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<@&286206848099549185>