The answer is D hope this helps
Not sure sorry I’m not good at math need help with something else..
Answer:
The answer is B. 
Step-by-step explanation:
Because 
So the answer in this question is B.
Answer:
Isosceles trapezoid
Step-by-step explanation:
-An isosceles trapezoid is also sometimes called a convex quadrilateral.
-It properties include:
- A line of symmetry can often bisects a pair of opposite sides.
- It has to obtuse alternating with each other after which a pair of acute angles alternate with each other i.e 80°, 80°,100°,100°
- It has a trapezoidal shape which by definition has a two pair of parallel sides.
- The angles on it's base or ceiling are equal hence the name Isosceles Trapezoid.
10 will be your answer because 4 x 5 divided by 2 is 10