Hemant Malhotra and R K Tyagi Solutions for Chapter: Triangles and Quadrilaterals, Exercise 3: Exercise-3

An obtuse triangle can never be an equilateral triangle.

Every angle of an equilateral triangle is $60°$.

There can be two right angles in a triangle.

Sum of four angles of quadrilaterals is ${360}^{°}.$

In a square, all angles are of measure _____degree.

In a rectangle, each of the four angles is of the measure _____$°$.

In a rhombus, all the four sides are _____.  $\left(\mathrm{equal} / \mathrm{unequal}\right)$

Number of vertices in a quadrilateral is _____.