Answer:
Explanation:
5x+25+4x-10+4x+2x=360 degree(sum of the interior angles of a quadilateral is 360 degree)
15x+15=360
15x=360-15
x=345/15
x=23
20 + 100=x (sum of two interior opposite angle is equal to the exterior angle formed)
120=x
second no. answer is 120° because exterior angle is equal to the sum of two interior angles
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