All isosceles triangles are ........................

All equilateral triangles are ...............

triangle ABC and triangle DBC are isosceles triangles on the same base BC. Prove that line AD bisects BC at right angles

An isosceles triangle has perimeter 30 cm and each of the equal sides is 12 cm. Find the area of the triangle.

ABC is an isosceles triangle right angled at B. Similar triangles ACD and ABE are constructed on sides AC and AB. Find the ratio between the areas of Delta ABE and Delta ACD

ABC is an isosceles triangle, right angled at C. Prove that AB^(2)= 2AC^(2) .

ABC is an isosceles triangle right angled at C. Prove that AB^(2) = 2AC^(2) .

The figure shows an isosceles triangle plate of mass M and base L . The angle at the apex is 90^@ . The apex lies at the origin and the base is parallel to X- axis. The moment of inertia of the plate about its base parallel to the x- axis is

ABC is an isosceles triangle right angled at A. forces of magnitude 2sqrt(2),5 and 6 act along BC, CA and AB respectively. The magnitude of their resultant force is

The figure shows an isosceles triangle plate of mass M and base L . The angle at the apex is 90^@ . The apex lies at the origin and the base is parallel to X- axis. The moment of inertia of the plate about the y- axis is

Prove using vectors: The median to the base of an isosceles triangle is perpendicular to the base.