J4
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(d)<br />
(e)<br />
Quadrilaterals<br />
These are flat figures enclosed by four line segments. (The diagrams below show the<br />
different kinds of quadrilaterals).<br />
1. A kite is a quadrilateral with two adjacent sides equal and the other two adjacent<br />
also equal.<br />
2. A trapezium is a quadrilateral with one pair of parallel sides.<br />
3. A parallelogram is a quadrilateral with both pairs of opposite sides parallel. The<br />
opposite sides are equal in length. Its diagonals are not of equal length and the<br />
sides are not perpendicular.<br />
4. A rectangle is a parallelogram with four right angles. Its diagonals are equal in<br />
length but they do not meet at right angles.<br />
5. A rhombus is a parallelogram with all sides equal. The sides do not necessarily<br />
meet at right angles. While the diagonals of a rhombus meet at right angles, they<br />
are not necessarily equal in length.<br />
6. A square is a rhombus with four right angles. A square has<br />
two equal diagonals that meet at right angles
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