Question

What is a quadrilateral? Explain with examples. [3 MARKS]

Answer 1

Definition: 1 Mark
Explanation: 1 Mark
Example: 1 Mark

A quadrilateral is a type of polygon. It has four sides.
Quadrilateral means "four sides" (quad means four, lateral means side).

It is a 2-dimensional closed shape and has straight sides.

In the quadrilateral, ABCD, here (AB, BC), (BC, CD), (CD, DA) and (DA, AB) are the adjacent side whereas (AB, CD) and (AD, BC) are the opposite sides.
The four angles are $\angle$ABC, $\angle$BCD, $\angle$CDA, $\angle$DAB.