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laplacetransform
Sep 14, 2020

Challenging geometry problem for 15yr olds

in Math Problems


6 answers2 replies
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3
Sujay R
Sep 15, 2020

60 degree

1
laplacetransform
Sep 15, 2020

Correct. Proof?

1
Dani Khan
Sep 16, 2020  ·  Edited: Sep 16, 2020

OC and OB are radii of the circle that means they are equal. So we get x at angle C then you use Sum of angles in all triangles to get x which will be equal to 60. x + x + x = 180.

that's how i see it. your welcome

1
laplacetransformer8
Sep 16, 2020

Oh yeah. what an idiot i am :(

Dani Khan
Sep 17, 2020

Nah bro mistakes happen and that's what makes math interesting and fun!


I've been in your place multiple times and that's why we have a community to help each other out :)

1
Monkey Bongos
Oct 23, 2020

it's 60 degrees because all equilateral triangles have angles of 60 degrees since all the

angles are equal, x + y + z= 180 deg, since <x is equal to <y which is equal to <z, then we could say <x + <x + <x = 180 degrees, so, 3<x = 180 degrees, divide both sides by 3, thus <x = 60 degrees

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laplacetransformer8
Sep 16, 2020

why does OC=OB imply x is at angle C???

Dani Khan
Sep 16, 2020  ·  Edited: Sep 16, 2020

aren't lines OC and OB radii of the semi - circle? which means they are equal just like in an isoceles triangle the sides are equal which makes the angles equal right?



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8 comments