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/Explanation: Sketch of the required quadrilateral PQRS is as follows. Its diaognals are PR and QS which meet at the point O. The meeting point of the diagonals O 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/Explanation: (a) Pair of opposite sides: KL and MN, KN and LM (b) Pair of opposite angles: ∠K and ∠M, ∠L and ∠N (c) Pair of adjacent sides: KN and NM, KL and LM (d) Pair of adjacent angles: ∠K and ∠N, ∠L and ∠M 3. Investigate : Use strips and fasteners to make a triangle and a quadrilateral. Try t...
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