I believe the answer is D)120
360 degrees, because all quadrilaterals (shapes with 4 sides) have angles that add up to 360 degrees
Use A: to find the value of x. In order to find that you would have to match one part of the proportion. x should be the numerator over 15 and 12 should be over 20 (The total length of that side of the triangle). Good luck. : )
Answer:
36y-63
Step-by-step explanation:
