Quadrilaterals
If the sides of a square are increased by 1%, then by what percent will the area of this square be increased?
by
Vaibhav Raj
The above figure shows five congruent rectangles. A trapezoid is drawn in such a way that its vertices coincide with vertices of some of the rectangles. What percentage of the figure is shaded?
by
Trevor Arashiro
In the diagram to the right, quadrilateral is a parallelogram and is the midpoint of
If the area of is what is the area of
by
Hemang Agarwal
In rectangle ABCD (below left), and . The corner at C is folded up (below right) and lands on so that and .
The area of quadrilateral CPNM can be written as , where m and n are positive, coprime integers. Find .
by
Matt Enlow
What is the area of a rhombus of side 13 such that the sum of its two diagonals is 34?
by
Paola Ramírez