A square is one type of rectangle, and a rectangle is one type of parallelogram.

The area of a triangle is half of the area of the rectangle with equivalent base and height.

All squares are rectangles.

We encounter similar difficulties when we substitute rectangles for triangles in this configuration.

The Japanese flag is a white rectangle with a red circle in the centre representing the sun.

Important geometric figures, that are triangle, square, rectangle, circle, parallelogram and trapeze.

A square is always a rectangle, but a rectangle is not always a square.

A square is both a rectangle and a rhombus.

The opposite sides of a rectangle are parallel.

Some important geometric shapes are the triangle, the square, the rectangle, the circle, the parallelogram and the trapezium.