57.6k views
5 votes
Determine the measure of the unknown angle in the triangle.

Determine the measure of the unknown angle in the triangle.-example-1

2 Answers

0 votes

Answer:

65°

Explanation:

Let the unknown angle be ∠ABC

∠ABC + 78° + 37° = 180° (angle sum property of a triangle)

∠ABC + 115° = 180°

∠ABC = 180° - 115°

∠ABC = 65°

∴the unknown angle in the triangle is 65°

User Mostfa Essam
by
7.6k points
2 votes

you add 78 plus 37 then subtract from 180

User Exelian
by
8.7k points

No related questions found

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