# Trapezium or trapezoid

Trapezium/Trapezoid (in USA) – is a triangle chopped in half horizontally. It’s shaped like a lobster trap. It is a shape with 4 sides but has a pair of opposite sides that are parallel.

A **trap with a void** (trapezoid) for a lobster is shaped like a trapezoid.

**Example 1**

This trapezium has parallel sides at the top (5m) and the bottom (8m).

**Example 2**

This trapezium also has parallel sides top and bottom, but is upside down. It is still a trapezium.