1. <D=120 degrees
since it is a isosceles trapezoid <C=<D
since it is a isosceles trapezoid <C=<D
2. AD=11
Diagonals of an isosceles are congruent so AC=DB
Diagonals of an isosceles are congruent so AC=DB
3. Yes, the midsegment of the trapezoid is 28.5cm.
First you need to find out x. Set <B and <D together because they are consecutive angles. Then set it equal to 180. x=6, plug it in into 15-2x and it equals 27. Add 27 to 30 then divided it by 2 and you get 28.5.
First you need to find out x. Set <B and <D together because they are consecutive angles. Then set it equal to 180. x=6, plug it in into 15-2x and it equals 27. Add 27 to 30 then divided it by 2 and you get 28.5.