Question

6. The sum of two angles of a triangle is equal to its third angle. Find the measure of
the third angle.​

Answer 1

Answer:

Let the first and second angle be a and b respectively

third angle = a+b

by angle some property of triangle

a+b + a+b =180

=2a + 2b =180

=2( a+b ) = 180

= a+b = 90

third angle =90°

Answer 2

a + b + a + b = 180

2 a + 2b= 180

Step-by-step explanation:

2(a+b) = 180