Angle D is 81. It is because all the angles in a quadrilateral add up to 360. If you add all the other angles together and subtract the sum from 360, you get 81.
Answer:
D) 5
Step-by-step explanation:
Answer:
True
Step-by-step explanation:
The area of a regular polygon is found by multiplying 1/2 times the apothem times the perimeter. The area for a single triangle is 1/2 times the height (which is the same as the apothem of a regular polygon) times the base (which is one of the sides of the regular polygon which you are multiplying by to find the perimeter of the polygon).
Answer: -8+61 = 53 and 6+61 = 67
