Learn about congruent and similar shapes with this BBC Bitesize Maths article. For students between the ages of 11 and 14.

CBSE: Extra questions on Chapter 9 - Areas of Parallelograms and Triangles (for CBSE Class 9 Maths exam 2020-21) are available here.

The total surface area of the prism is made up of two congruent triangles and three differently sized rectangles. This may be shown by a net of the prism.