# Quadrilaterals Class-8 RS Aggarwal ICSE Maths Goyal Brothers

Quadrilaterals Class-8 RS Aggarwal ICSE Maths Goyal Brothers Prakashan Solutions Chapter-17. We provide step by step Solutions of Exercise / lesson-17 Quadrilaterals  for ICSE Class-8  RS  Aggarwal Mathematics.

Our Solutions contain all type Questions of Exe-17 A, Exe-17 B, Exe-17 C, (MCQ) and Mental Maths with Notes to develop skill and confidence. Visit official Website for detail information about ICSE Board Class-8 Mathematics.

## Quadrilaterals Class-8 RS Aggarwal ICSE Maths Goyal Brothers Prakashan Solutions Chapter-17

–: Select Topics :–

Exe-17 A,

Exe-17 B,

MCQs, Exe-17 C,

Mental Maths

A quadrilateral is a closed figure obtained by joining four point (with no three points col linear) in an order. Every quadrilateral has :
(i) Four vertices,
(ii) Four sides,
(iii) Four angles and
(iv) Two diagonals.

1. Trapezium : It is quadrilateral in which one pair of opposite sides are parallel.

2. Parallelogram : It is a quadrilateral in which both the pairs of opposite sides are parallel.

3. Rectangle : It is a quadrilateral whose each angle is 90°.

4. Rhombus : It is a quadrilateral whose all the sides are equal.

5. Square : It is a quadrilateral whose all the sides are equal and each angle is 90°.

6. Kite : It is a quadrilateral in which two pairs of adjacent sides are equal.

Note :

• Square, rectangle and rhombus are all parallelograms.
• Kite and trapezium are not parallelograms.
• A square is a rectangle.
• A square is a rhombus.
• A parallelogram is a trapezium.

#### PARALLELOGRAM:

A parallelogram is a quadrilateral in which opposite sides are parallel

#### PROPERTIES OF PARALLELOGRAM:

1. A diagonal of a parallelogram divides it into two congruent triangles.

2. The opposite sides of a parallelogram are equal.

Theorem : If each pair of opposite sides of a quadrilateral is equal, then it is a parallelogram.

3. The opposite angles of a parallelogram are equal.

Theorem : If in a quadrilateral, each pair of opposite angles is equal, then it is a parallelogram.

4. The diagonals of a parallelogram bisect each other.

Theorem : If the diagonals of a quadrilateral bisect each other, then it is a parallelogram.

### Quadrilaterals Exe-17-(B, )Class-8 RS Aggarwal ICSE Maths Goyal Brothers Prakashan Solutions

MCQs, Exe-17-(C, )Quadrilaterals Class-8 RS Aggarwal ICSE Maths Goyal Brothers Prakashan Solutions

Multiple Choice Questions

Choose the correct option in each of the following

### Mental Maths Quadrilaterals Chapter-17 Class-8 RS Aggarwal

–: End of Quadrilaterals Class-8 RS Aggarwal  Solutions :–

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