Question

Find the measure of the missing angle in the triangle.

20 + 70 + x = 180


a. 60
b. 65
c. 75
d. 90

Answer 1

The answer to this is
90

Answer 2

Answer: the missing angle has a measure of 90 degrees, which is option (d).

Explanation:

20 + 70 + x = 180

We are able include the two known angles and after that subtract the result from 180 to induce the degree of the lost point:

20 + 70 = 90

180 - 90 = 90