# Dav Class 8 Understanding Quadrilaterals Worksheet 3

DAV Maths Solutions for class 8 Understanding Quadrilaterals Worksheet can be read from this post. Solutions are given below with proper Explanation please bookmark our website for further updates!! All the Best !!

## Chapter 11 Worksheet 3 | Understanding Quadrilaterals | Class-8 DAV Secondary Mathematics

1. ABCD is a quadrilateral in which the diagonals are equal and bisect each other at right angles. What can you say about the figure?

Is it (i) a rectangle. (ii) a rhombus, (iii) a square?

2. The diagonals of a rhombus are in the ratio 5 : 12.1f its perimeter is 104 cm. find the lengths of the sides and the diagonals.

3. A pair of adjacent sides of a rectangle are in the ratio 3 : 4. If its diagonal is 20 cm. find the lengths of the sides and hence, the perimeter of the rectangle.

4. ABCD is a rhombus whose diagonals intersect at 0. Show that AOB = COD.

5. The diagonals of a rectangle ABCD intersect in 0. If LBOC = 70°. Find LODA.

6. ABC and ADC are two equilateral triangles on a common base AC (Fig. 11.28). Find the angles of the resulting quadrilateral. Show that it is a rhombus.

7. ABCD is a rectangle (Fig. 11.29) in which DP and BQ are Perpendiculars from D and B respectively on diagonal AC. Show that:
(I) ADP = CBQ (ii) ADP = CBQ (iii) DP = BQ