Question

What is the measure of

Answer 1

It’s 50!

So everything adds up to 180.
You do 78+52 = 130
180-130!
And 50!!

Answer 2

50

Explanation:

The values of a triangle have to equal 180. Subtract 180 by the two angles.

180-52=128

128-78=50

So M is 80 degrees.

-hope it helps