Angle | Mathematics | Page 1

ionic glacier Nov 11, 2024, 5:30 PM

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velvet ridgeBOT Nov 11, 2024, 5:30 PM

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ionic glacier

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viral root Nov 11, 2024, 5:43 PM

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ionic glacier

IGCSE PAPER LETS GO

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🔥

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so do you know the angle rules for parallelograms?

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@ionic glacier

ionic glacier Nov 11, 2024, 5:44 PM

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No

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Not gonna lie to u rn

viral root Nov 11, 2024, 5:45 PM

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ok

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so here they are

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Opposite angles are equal and congruent.

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Consecutive angles are supplementary, meaning they add up to 180°

ionic glacier Nov 11, 2024, 5:45 PM

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What’s consecutive

viral root Nov 11, 2024, 5:45 PM

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ionic glacier What’s consecutive

next to each other

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so angle DCB and angLe CDA add up to 180

ionic glacier Nov 11, 2024, 5:46 PM

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Okay then

viral root Nov 11, 2024, 5:47 PM

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so using those rules, what is angle cda?

ionic glacier Nov 11, 2024, 5:47 PM

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58

viral root Nov 11, 2024, 5:47 PM

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no thats angle dcb

ionic glacier Nov 11, 2024, 5:48 PM

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112/58

viral root Nov 11, 2024, 5:48 PM

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ionic glacier 112/58

whats the slash for??

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its 122

ionic glacier Nov 11, 2024, 5:48 PM

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Divide

viral root Nov 11, 2024, 5:48 PM

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no??

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they add to 180

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meaning that cda + 58 = 180

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so cda = ?

ionic glacier Nov 11, 2024, 5:48 PM

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Oh

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I get it

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112

viral root Nov 11, 2024, 5:49 PM

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ionic glacier 112

are you sure 112 + 58 = 180

ionic glacier Nov 11, 2024, 5:49 PM

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Yes

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No

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170

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What is this shit

viral root Nov 11, 2024, 5:50 PM

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bro what the fuck 💀

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this is a calc question right?

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so use your calculator

ionic glacier Nov 11, 2024, 5:50 PM

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Yes

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Look

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This is the answer but

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I don’t get it

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Cuz I got it from gauth

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I want to understand it you know

viral root Nov 11, 2024, 5:51 PM

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ITS NOT 112

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WHAT ARE YOU ON

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180 - 58 IS 122

ionic glacier Nov 11, 2024, 5:51 PM

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Oh

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Explain the rest

viral root Nov 11, 2024, 5:52 PM

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omd

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so anyways

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angle FDE = angle CDA

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because they are opposite angles

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and because we know FD = DE

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triangle FDE is isoceles

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what is the angle rule for isoceles triangles?

ionic glacier Nov 11, 2024, 5:53 PM

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2 angles are equal

viral root Nov 11, 2024, 5:54 PM

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which two angles

ionic glacier Nov 11, 2024, 5:54 PM

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Edf and fde

viral root Nov 11, 2024, 5:55 PM

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ionic glacier Edf and fde

good

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so what does that mean?

ionic glacier Nov 11, 2024, 5:55 PM

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It means

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If we get f

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We get e

viral root Nov 11, 2024, 5:55 PM

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yes good job

ionic glacier Nov 11, 2024, 5:55 PM

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Now how do I get f

viral root Nov 11, 2024, 5:56 PM

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and what is another angle rule for all triangles

ionic glacier Nov 11, 2024, 5:56 PM

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Add up to 180

viral root Nov 11, 2024, 5:56 PM

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exaclty

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so we know 2 angles are same (which we dont know)

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and the other angle is 122

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so can we write an equation for finding x?

ionic glacier Nov 11, 2024, 5:56 PM

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So

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112 + 2x =180

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I mean

viral root Nov 11, 2024, 5:57 PM

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so solve for x now

ionic glacier Nov 11, 2024, 5:57 PM

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120

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Mb

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No

viral root Nov 11, 2024, 5:57 PM

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ionic glacier 120

122

ionic glacier Nov 11, 2024, 5:57 PM

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122

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29

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E is 29 and f is 29

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That’s it??

viral root Nov 11, 2024, 5:58 PM

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yes

ionic glacier Nov 11, 2024, 5:58 PM

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Alright thanks

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Appreciate it

viral root Nov 11, 2024, 5:58 PM

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btw these questions mention "show any workings"

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so if you form equations like these then youll get all the marks

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so if youre done with help do +close to clean up

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have a great day

ionic glacier Nov 11, 2024, 6:00 PM

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Wait last question

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How did I get d

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@viral root

viral root Nov 11, 2024, 6:00 PM

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wdym

ionic glacier Nov 11, 2024, 6:00 PM

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D

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It’s 58

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But how

viral root Nov 11, 2024, 6:00 PM

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oh the 122 angle?

ionic glacier Nov 11, 2024, 6:01 PM

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Yes

viral root Nov 11, 2024, 6:01 PM

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use the rule that consecutive angles in a parallelogram sum to 180

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or you could say

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co-interior angles sum to 180

ionic glacier Nov 11, 2024, 6:01 PM

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Bet

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+close

unkempt blazeBOT Nov 11, 2024, 6:01 PM

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ionic glacier +close

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