Answer:
? = 53°
Step-by-step explanation:
The sum of the 3 angles in a triangle = 180°
The measure of the third angle of the triangle on the left is
third angle = 180° - (60 + 80)° = 180° - 140° = 40°
The external angle of a triangle is equal to the sum of the 2 opposite interior angles.
40° + 49° = 89° is an external angle of the triangle on the right, thus
? + 36 = 89 ( subtract 36 from both sides )
? = 53°
