I think the other 2 are 136 and 230 (My mouse is going crazy even though the sensitivity is perfectly fine, so it won't let me draw anymore)

RainbowPanda Feb 26, 2019

#1**+1 **

These are somewhat tricky !!!

First one

Angle DFE intercepts a diameter......when this is the case....its measure = 90°

So angle FDE = 180 - 90 - 63 = 27°

And the arc it intercepts - FE - is twice its measure = 54°

Second one.....even tougher!!!

Angle GHJ intercepts arc GJ = 360 - arc IJ - arc HI - arc GH

So arc GJ = 360 - 135 - 31 - 86 = 108°

And angle GHJ intercepts this arc so it measures (1/2)(108) = 54°

Notice that angle GIJ intercepts the same arc....so....it also measures 54° !!!!!

CPhill Feb 26, 2019