Class 9 Triangles

In triangle ABC, if AB=BC and ∠B = 70°, ∠A will be:

For two triangles, if two angles and the included side of one triangle are equal to two angles and the included side of another triangle. Then the congruency rule is:

A triangle in which two sides are equal is called:

The angles opposite to equal sides of a triangle are:

ABC is an isosceles triangle in which altitudes BE and CF are drawn to equal sides AC and AB respectively. Then:

If E and F are the midpoints of equal sides AB and AC of a triangle ABC. Then:

If ABC and DBC are two isosceles triangles on the same base BC. Then:

If ABC is an equilateral triangle, then each angle equals to:

If AD is an altitude of an isosceles triangle ABC in which AB = AC. Then:

In a right triangle, the longest side is: