A is the answer, I think.
Hey there!
BOD is a 90 degrees angle. Make an equation for that angle. 15+12+x=90. Simplify this to 27+x=90. You need to isolate x, so subtract 27 on each side to get x=63. C is the answer.
I hope this helps!
Answer:
H for sure
Step-by-step explanation:
It’s not a square but it’s a rectangle rectangles are parallel and rectangles are quadrilaterals