Side Lengths and Angles in Triangles

The sum of the lengths of any two sides of a triangle is ____ than the third side.

• greater than

• less than

• equal to

The total measure of the three angles of a triangle is ____

• 90⁰

• 180⁰

• 360⁰

If the two angles of a triangle are 50 degree and 70 degree, then the measure of third angle is _____

• 50⁰

• 60⁰

• 70⁰

A triangle in which all the three sides are of equal lengths is called an ______

• Equilateral triangle

• Scalene triangle

• Isosceles triangle

A triangle in which two sides are of equal lengths is called an _____

• Scalene triangle

• Equilateral triangle

• Isosceles triangle

In a right angled triangle, the side opposite to the right angle is called the _____

• base

• hypotenuse

• perpendicular

The difference between the lengths of any two sides is ____ than the length of the third side.

• greater than

• less than

• altitude

In a right angled triangle, if one angle is 45 degree then the measure of the third angle is ______

• 90⁰

• 45⁰

• 180⁰

In a triangle if all angles are equal, then the measure of each angle is ______

• 45⁰

• 60⁰

• 90⁰

If the Pythagoras property holds, the triangle must be _____

• right angled

• acute angled

• obtuse angled