Question

how to find the adjacent interior angle of a triangle​

Answer 1

Answer:

sum of the interior angles of triangle = exterior angle of triangle

Step-by-step explanation:

Answer 2

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

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

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

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

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

Hope this helps you

Thanq