What makes one shape different from another? Different shapes have different attributes, or things about them that can help you identify them. For example, you can tell a shape is a square if all its sides are the same length. Having four sides of equal length is an attribute of squares.
Quadrilaterals are also two-dimensional shapes. The word quad means four, and the word lateral means side. As their name shows, quadrilaterals have 4 sides.
Which of these shapes is NOT a quadrilateral? Click that shape.
A triangle has only 3 sides, so it is not a quadrilateral.
A triangle has only 3 sides, so it is not a quadrilateral.
A triangle has only 3 sides, so it is not a quadrilateral.
A triangle has only 3 sides, so it is not a quadrilateral.
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