A vertical and a horizontal line makes the most common right angles. However, diagonal lines intersecting each other also form right angles. If you draw the diagonals of a square, a rhombus or a kite, the angle at the intersection is 90 degrees and is, therefore, a right angle.

Geometric shapes such as square and rectangle have four right angles, a right trapezoid has two right angles, whereas a right angle triangle has one of its angle that is a right angle The two diagonals of some quadrilaterals such as a square, rhombus, or a kite intersect each other to form a right angle

The following are some geometric objects or situations that involve the use of right angles. A square and rectangle contain four right angles. A right triangle contains one right angle