👉 Learn how to solve problems with rectangles. A rectangle is a parallelogram with each of the angles a right angle. Some of ...

👉 Learn how to determine the figure given four points. A quadrilateral is a polygon with four sides. Some of the types of ...

The base and perpendicular height are at right angles. Showing that a parallelogram has the same area as a rectangle: Split the parallelogram into a right-angled triangle and a trapezium. Move the ...