A square has four right angles (90°). Each diagonal splits a corner into two angles of 45°. Note also that the diagonals cut each other in half at right angles. A rectangle has four right angles. The ...

Space to play or pause, M to mute, left and right arrows to seek, up and down arrows for volume. What is a quadrilateral? A quadrilateral is a four-sided shape where each of the sides are straight and ...

A worksheet on the properties of parallelograms, rectangles, rhombi and squares. It consists of two exercises, the second of which has 10 problems. In the first exercise, the students have to match ...