Question

What is the measure of X?

Answer 1

Answer:

X = 40°

Step-by-step explanation:

angleZ + angleY + angleX = 180° (Angle sum property)

80° + 60° + X° = 180°

140° + X° = 180°

X° = 180° - 140°

X° = 40°

hope it helps!

Answer 2

Answer:

The answer is B.

Step-by-step explanation:

Given that the total angles in a triangle is 180° so in order to find the value of x, you have to substract 60° and 80° from 180° :

$60 + 80 + x = 180$

$140 + x = 180$

$x = 180 - 140$

$x = 40$