For every triangle, the measure of all three angles equal 180.
90 + 27 = 117.
180 - 117 = 63.
The 3rd angle is 63°
Answer:
63 degree
Step-by-step explanation:
first angle + second angle + third angle = 180 ( because it's a triangle)
90 + 27 + x = 180
x = 180 - 27 - 90
x = 63
