## Presentation on theme: "Quadrilaterals - Square"— Presentation transcript:

All four sides of a square are equal. All four angles of a square are right angles. Perimeter of a square = 4 × s units (s = side) Area of a square = s2 sq. units (s = side) Diagonal of a square = sqrt(2) × s (s = side) Diagonals of a square are equal and bisect each other in right angle.

Opposite sides of a rectangle are equal. All four angles of a rectangle are right angles. Perimeter of a rectangle = 2 × (l + b) (l = Length, b = Breadth) Area of a rectangle = l × b (l = Length, b = Breadth) Diagonal of a rectangle = sqrt(l2 + b2) (l = Length, b = Breadth) Diagonals of a rectangle are equal and bisect each other (not in right angle however). Square is a special type of rectangle with l=b. D A b B l C

All sides of a rhombus are equal. (All angles are not right angles however) Opposite sides of a rhombus are parallel to each other. Perimeter of a rhombus = 4 × s (wh. s = side) Area = s × h (Wh. s=side, h=height) Area = ½ × (d1 × d2) (wh. d1 and d2 are diagonals) Diagonals of a rhombus bisect each other in right angle. (However they are not equal) Opposite angles of a rhombus are congruent. Angles on either side are supplementary. A D d1 h d2 B C s