213k views
16 votes
The triangular base of the given prism has an interior angle with a measure of 80° and an interior angle with a measure of 55°. What is the measure of the unknown angle?

A. 45°
B. 65°
C. 75°
D. 85°

User Oneil
by
8.3k points

1 Answer

3 votes

Answer:

A. 45°

Explanation:

When we are given two measurements of interior angles we add both of those angles together.

Also know that a triangle equals 180 degrees

So when we write out this expression
80+55+x=180


135+x=180\\-135=-135\\x=45

Hope this helps

User Ya Wang
by
7.9k points
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Categories