Alka Tuli and Rajesh Hassija Solutions for Chapter: Properties of Triangles, Exercise 8: MENTAL MATHS

The exterior angle of a triangle is $120°$ and one of the interior angle is $30°$. The measure of the other interior opposite angle is_____.

A triangle has _____ medians.

Sum of three angles of a triangle is equal to _____ right angles.

If two angles of a triangle are $30°$ and $70°$, the measure of the third angle is _____$°$.

In an equilateral triangle, the measure of each angle is equal to _____

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

In a right-angled triangle, the square of the hypotenuse is equal to the _____ of the squares of the other two sides.

In a right-angled triangle, if the lengths of the legs are $8 \mathrm{cm}$ and $15 \mathrm{cm}$, respectively, the length of the third side will be _____.