Question

Find the unknown angle measure. Given 78 degrees 63 degrees Solve for x

Answer 1

Answer:

39°

Step-by-step explanation:

If it gives you 2 angles and asks for x, you know it has 3 angles. So the shape is a triangle. All 3 angles in a triangle add up to 180°.

So add 78 and 63 which equals 141

$78+63=141$

And to find x, subtract 141 from 180 because 180 is the total.

$180-141=39$

So the answer is 39