Answer:
90°
Step-by-step explanation:
because 180 - 90
remember the quadrilateral must equal to 360 (all angles)
Answer:
<em>A or B, it's either one of the two</em>
Answer:
11
Step-by-step explanation:
The sum of the remote interior angles = the exterior angle
66 + 7x + 7 = 12x + 18
7x + 73 = 12x + 18
55 = 5x
x = 11
3.2 is the answer.
If you want to learn the steps to the process
just copy and paste this "how to find the radius of a circle with an area."