Chapter - 4 Basic Geometrical Ideas

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Q
Basic Geometrical Ideas

Question:

1. Draw a rough sketch of a quadrilateral PQRS. Draw its diagonals. Name them. Is the meeting point of the diagonals in the interior or exterior of the quadrilateral?

Solution: 

The diagonals of the quadrilateral PQRS is PR and QS. The meeting point of the diagonals is in the interior of the quadrilateral.

 

2. Draw a rough sketch of a quadrilateral KLMN. State,

(a) two pairs of opposite sides,

(b) two pairs of opposite angles,

(c) two pairs of adjacent sides,

(d) two pairs of adjacent angles.

Solution: 

(a) (KL, MN) and (LM, KN) are the two pairs of opposite sides.

(b) small angleKLM, small angleMNK and small angleNKL, small angleLMN are the two pairs of opposite angles.

(c) (KL, LM) and (KN, NM) are the two pairs of adjacent sides.

(d) small angleLMN, small angleMNK and small angleKLM, small angleLMN are the two pairs of adjacent angles.

Answer:


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