Trapezoid as shown has two parallel sides with length 5 and 15 & two diagonals with length 12 and 16. What is its area?
A right trapezoid is partitioned into 4 triangles by its diagonals, as shown:
Which colored region has a largest area?
A right trapezoid has parallel sides of 3 and 7. What is the radius of the inscribed circle, tangent to all four sides?
The lengths of two adjacent sides of a parallelogram are 8 and 15, respectively. Find the sum of squares of the lengths of the two diagonals.
A square is in the first quadrant, as shown, with its sides extending to points on the x-axis of (3, 0), (5, 0), (7, 0) and (13, 0). What is the area of the square?
