Q3 of 13 Page 102

Draw triangles specified below, each of perimeter 10 centimetres.

Sides in the ratio 3 : 4 : 5

Let each part be ‘x’.


Then sides will be 3x, 4x, 5x respectively.


Given perimeter = 10cm


3x + 4x + 5x = 10cm


12x = 10cm



Then sides are






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2

Draw a rectangle of perimeter 15 centimetres and sides in the ratio 3:4.

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Draw triangles specified below, each of perimeter 10 centimetres.

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Draw triangles specified below, each of perimeter 10 centimetres.

Sides in the ratio 2 : 3 : 4

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In the picture below, the diagonals of the trapezium ABCD intersect at P.


Prove that PA × PD = PB × PC