construct an isosceles triangle whose base is 7.5 cm and altitude is 4.2 CM .
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first Draw base line of 7.5cm with scale and pencil.
Then Draw perpendicular bisector of the line.
on bisector with Help of compass and pencil Draw an arc measuring 4.2cm with scale,join arc with Centre of base and now, join top of line with end points of base, triangle is made
Then Draw perpendicular bisector of the line.
on bisector with Help of compass and pencil Draw an arc measuring 4.2cm with scale,join arc with Centre of base and now, join top of line with end points of base, triangle is made
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