94.1k views
5 votes
Given ∠ABC is a right angle. Prove ∠1 and ∠2 are complementary.
Write a two column Proof.

Given ∠ABC is a right angle. Prove ∠1 and ∠2 are complementary. Write a two column-example-1

1 Answer

3 votes
m∠ABC = 90 degrees
m∠1 + m∠2 = m∠ABC
Use transitive property of equality
m∠1 + m∠2 = 90 degrees.
According to the definition of complementary angles, ∠1 and ∠2 must be complementary.

Have an awesome day! :)
User Sethcran
by
6.7k points