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Triangle class - 9


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What is median of a triangle?

Ans:- The line segment that joins the mid point of a side with the opposite vertex of a triangle is called median of a triangle.
There are three medians in a triangle. 
What is altitude of a triangle?
Ans:- The perpendicular line segment that is drawn from a vertex to the opposite side of a triangle is called altitude of a triangle.

Find the area of the triangle whose base measures 24 cm and the the corresponding height measures 14.5 cm

  The base of a triangular field is three times its altitude. if the cost of sowing the field at Rs 58 per hectare is Rs 783. find its base and height?

Find the area of the triangle whose sides are 42 cm , 34 cm and 20 cm in length. Hence find the height corresponding to the longest side.

The sides of a triangle are in the ratio 5:12:13 and its perimeter is 150 metre. Find the area of the triangle.

Two sides of a triangular field are 85 meter and 154 meter in length and its perimeter is 324 meter. find ( I ) The area of the field, (II) the length of the perpendicular from the opposite vertex on the side measuring 154 meter.

  Find the area of an isosceles triangle each of whose equal sides measures 13 cm and whose base measures 20 cm

The base of an isosceles triangle measures 80 cm and its area is 36 cm2 . Find the perimeter of triangle.  

The perimeter of an isosceles triangle is 32 cm . The ratio of the equal sides to its base is 3:2 . Find the area of the triangle.


The perimeter of a triangle is 50 cm. one side of the triangle is 4 cm longer than the smallest side and the third side is 6 cm less than twice the smallest side. find the area of the trianglr

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