Question

sum of the angles in a straight line is 180 degrees​

Answer 1

Step-by-step explanation:

The angles in the triangle add up to 180 degrees.

So a + b + y = 180.

The angles on a straight line add up to 180 degrees.

So x + y = 180.

Answer 2

Answer:

The angles in the triangle add up to 180 degrees. So a + b + y = 180. The angles on a straight line add up to 180 degrees. So x + y = 180.