Help with geometry

[lethal trout]

i cant do number 8

[verbal aurora]

I'd find this angle first

[lethal trout]

yep

[verbal aurora]

then consider the sum of the angles

which is $\frac{180(n-2)}{n}$, in degrees, for a polygon of $n$ sides.

[mossy walrus]

enclave wangedrocht

[verbal aurora]

you can derive it by considering drawing some triangles

[lethal trout]

whats this for

[verbal aurora]

for this

[lethal trout]

total sum of the angles?

[verbal aurora]

mhm

[lethal trout]

i gotta be honest, i still dont understand

[verbal aurora]

How far did you get?

[lethal trout]

i tried bisecting at 130 to get a straight angle

[verbal aurora]

did you find:

1. the purple angle
2. the sum of the angles?

[lethal trout]

no for number 1

[verbal aurora]

Which is labeled as Question 8, right?

yeah that's what I'm talking about

[lethal trout]

Yeah

[verbal aurora]

so...

[lethal trout]

whats that purple angle

[verbal aurora]

yk that angles around a point add to $360^{\circ}$ right?

[mossy walrus]

enclave wangedrocht

[lethal trout]

yeah

angles of a quadrilateral?

[verbal aurora]

more like this

[lethal trout]

oh

[lethal trout]

so that purple angle is 230 degrees

Oh, I finally got i!

it!

a = 73

Ty so much for the help

[verbal aurora]

,w 540-230-82-65-90

[verbal aurora]

mind if I close this now?

[lethal trout]

can i take a screeny

[verbal aurora]

sure

I mean closing doesn't delete it

[lethal trout]

ok done

You can close it

[verbal aurora]

so you could also just save the link

since it's relatively long

whatever you want