Respuesta :

Answer: 50

Step-by-step explanation:

A right angle is 90 degrees. A triangle must add up to 180 degrees. Add 40 and 90 to get 130. Then subtract 180 from 130 to get 50.

Answer:

? = 50°

Step-by-step explanation:

The sum of the 3 angles in a triangle = 180°

Subtract the sum of the 2 angles from 180° for ?

? = 180° - (90 + 40)° = 180° - 130° = 50°