TRIANGLES

ISOSCELES TRIANGL.E A triangle whose two sides are equal is called an isosceles triangle.

OBTUSE TRIANGLE A triangle whose one angle is obtuse is called an obtuse-angled triangle or an obtuse triangle.

RIGHT TRIANGLE A triangle whole one angle is a right angle is called a right-angled triangle or right triangle.

In that figure, if Delta ABE ~= Delta ACD , show that Delta ADE ~= Delta ABC .

If Delta ABC ~ Delta PQR and 4A (Delta ABC) = 25 A (Delta PQR) then AB : PQ = ?

In the figure, DEFG is a square and angle BAC = 90^(@). Prove that (A) Delta AGF ~ Delta DBG (B) Delta AGF ~ Delta EFC (C) Delta DBG ~ Delta EFC