Question

Find m+n

pls help !!!

Answer 1

Apply angle sum property

• m+n+40=180
• m+n=180-40
• m+n=140

The answer is 140

Answer 2

• m + n = 140

===============

Given

• Two parallel lines,
• Included triangle between the parallel lines,
• Two interior angles of the triangle are m and n,
• Another angle of 40°.

To find

• The sum of angles m and n

Solution

As per given, the missing interior angle is corresponding with 40° angle.

Since corresponding angles are equal, the third interior angle of the triangle is 40°.

Sum of three interior angles is 180°:

• m + n + 40 = 180
• m + n = 180 - 40
• m + n = 140