Find the greatest angle of the triangle whose sides are of length 5, 12 and 13 cms

Find the greatest angle of the triangle whose sides are 3, 5 and 7 cms.

Find the greatest angle in the triangle whose sides are x^2+x+1 ,2x+1, x^2-1

Construct a rectangle with adjacent sides of lengths 5 cm and 4 cm.

Find the area of the triangle whose vertices are.(ii) (-5,-1),(3,-5),(5,2)

Find the area of the triangle whose vertices are (5,2),(-9,-3),(-3,-5)

Construct an equilateral triangle with sides 4 cm and then construct a similar triangle of the given triangle whose sides are 3/4 times of the given triangle.

Find the length of the hypotenuse of the triangles whose other two sides are:(iii)5 cm ,12 cm

The sides of an equilateral triangle increae at the rate of sqrt3 cm//sec . What will be the rate of increae in area of the triangle when the length of a side is 5 cm?

Using vector method find the area of a triangle whose vertices are A (1,-1,2) , B (2,1,-1) and C (3,-1,2).

Find the area of the triangle formed by joining the mid-points of the sides of the triangle whose vertices are (0,-1),(2,1) and (0,3).Find the ratio of this area to the area of the given triangle.