Respuesta :

Answer:

180-32-71= 77 (TRIANGLE ADD UP TO 180)

Answer:

The third angle's measure = 77°

Step-by-step explanation:

To find the third angle, we can subtract 180 by 32° and 71°.

Why?

The sum of interior angles of a triangle always add up to 180° (by the triangle sum theorem)

So, 32 + 71 + x = 180

180 - 71 - 32 = 77°