# How to draw a pyramid prism

Written by andrew latham
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Prisms have tops and bottoms of the same shape while pyramids have a pointy end where their sides join into an apex. Therefore, if you want to be pedantic and technical about the term, it is impossible to have a shape which is both a pyramid and a prism. However, both triangular prisms, the shape of a Toblerone chocolate bar, and triangular pyramids, also known as tetrahedrons, are sometimes called pyramid prisms. You can build either of these shapes by designing a net of the shape on paper. (See reference 1 and 2)

Skill level:
Moderately Challenging

### Things you need

• Paper
• Ruler
• Isometric dot paper
• Pen
• Scissors
• Tape

## Triangular Prism

1. 1

Draw a rectangle in the middle of the isometric dot page. Draw it three dots wide and 12 dots long. (See references 1 and 2)

2. 2

Draw a triangle on each end of the rectangle. All the sides must be three dots long. Now your drawing should look like a pencil sharpened on both sides. (See references 1 and 2)

3. 3

Draw a rectangle on each side of your original rectangle. Both rectangles must be equal to the initial rectangle, in other words, three dots wide and 12 dots long. This is the net for a triangular prism. (See references 1 and 2)

4. 4

Cut around the perimeter of the net. You should end up with a square with two triangles jotting from two of its sides.

5. 5

Fold your net along the interior lines. Fold the triangles towards each other so the apex is facing upwards. Fold the outer rectangles towards each other so they meet with the triangles. (See references 1 and 2)

6. 6

Cut five pieces of tape and stick together the five open sides of your triangular prism so it holds its shape. (See references 1 and 2)

## Triangular Pyramid

1. 1

Draw an equilateral triangle in the centre of an isometric dot page. Draw it so each side is six dots long. (See reference 3)

2. 2

Mark the centre of each side the triangle with your pen. Join the three centres to form a smaller triangle in the centre of your initial triangle. Cut along the outer sides of the larger triangle. You should end up with a large triangle containing four smaller triangles. (See reference 3)

3. 3

Fold the paper along the lines that make up the smaller triangle. Three of the triangles will join at a central apex and form a triangular pyramid. Cut three strips of tape and stick together the three open sides of the pyramid. (See reference 3)

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