I need some help with this circle theorem, I understand that the line is over lapped but I can't figure the rest out.

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Guest Jan 15, 2019

#1**0 **

use isoceles triangles, some of teh sides are the same because they are radii.

HOPE THIS HELPED!

asdf335 Jan 15, 2019

#2**+1 **

The base angles of the bottom triangle are equal because they are opposite equal radii

So....the apex angle of the bottom triangle = 180 - 50 - 50 = 80°

And c is an inscribed angle intercepting the same arc as this central angle of 80°

So....c has 1/2 the measure of this angle = 40°

CPhill Jan 15, 2019