Can a polygon habe for its faces:(i)3 triangles. (ii)4 triangles. (iii)a square and four triangles.

Plot the points (2,3), (6,3) and (4,7) in a graphsheet. Join them to make it a triangle. Find the area of the triangle.

By giving a counter example, show that the following statements are not true. (i) p: If all the angles of a triangle are equal, then the triangle is an obtuse angled triangle.

Sides of triangles are given below. Determine which of them are right triangles. In case of a right triangle , write the length of its hypotenuse. 3cm, 24 cm, 25 cm

The Vertices of a triangle are (8,-4) ,(9,5) and (0,4) Prove that triangle is an isoscele triangle .

Match the following : Measures of Triangle Type of Triangle (iii) All sides are of different length

If the lengths of the sides of a triangle are 3,5,7 , then the largest angle of the triangle is

Match the following : Measures of Triangle Type of Triangle (iv) 3 acute angles

Prove that " the ratio of areas of two similar triangles is equal to the square of the ratio of their altitudes.

Match the following : Measures of Triangle Type of Triangle (ii) 2sides of equal length