Question

Triangles vertex angle 5y+3 base angle 4y+8 and exterior angle 146? Find the measure of

Answer 1

Step-by-step explanation:

Because the interior angles of a triangle add to 180°, and angles c+d also add to 180°:

The interior angles of a triangle add to 180°:a + b + c = 180°

Angles c and d make a straight angle, which is 180°:d + c = 180°

So d + c equals a + b + c:d + c = a + b + c.

1. Subtract c from both sides:d = a + b.