If the lengths of three consecutive sides of an isosceles trapezium are 5, 6, and 8 cm, then what's the length of the fourth side? - Quora
DragonBox Elements:Amazon.com:Appstore for Android
How to find a side of an isosceles trapezoid if three sides and an angle are given - Quora
The length of the parallel sides of an isosceles trapezoid are 8 inches and 16 inches respectively. If the diagonal bisects the base angle, what is the area of the trapezoid? - Quora
DragonBox Elements:Amazon.com:Appstore for Android
DragonBox Elements:Amazon.com:Appstore for Android