Question

please answer this now!!!

two angles of a triangle are the same size. the third angle is 3 times as large as the first. how large are the angles?

Answer 1

Let the first angle and second angle be a° each

Third angle = (3a) °

By angle sum property of triangle, we get

a + a + 3a = 180

=> 5a = 180

=> a = 36

First angle = 36°

Second angle = 36°

Third angle = 36 × 3 = 108°

Answer 2

Let the 1st and third angle be x. then the third angle will be (3×x) = 3x
x +x + 3x = 180
5x = 180
x = 36
angles are 36 ,36, 108