Illustration of pattern showing steps to make a barn. The barn is a composite figure made up of a triangular…

Illustration of pattern showing steps to make a house. The house is a composite figure made up of a…

Diagram showing how "A truncated triangular prism is equivalent to the sum of three pyramids whose common…

Illustration used to compare the volumes of a pyramid and a prism by emptying sand from the pyramid…

Diagram used to prove the theorem: "The volume of a triangular prism is equal to the product of its…

Diagram used to prove the theorem: "The plane passed through two diagonally opposite edges of a parallelopiped…