Concept wise

## Trapezium

One pair of parallel sides

AB ∥ CD

## Parallelogram

Opposite sides are parallel

• AB ∥ CD

Opposite sides are equal

• AB = CD

## Rhombus

Parallelogram with all sides equal

So,

• AB ∥ CD & AD ∥ BC
• AB = BC = CD = AD

## Rectangle

Parallelogram with opposite sides equal & all 4 angles 90°

So,

• AB ∥ CD & AD ∥ BC
• AB = CD & AD = BC
• ∠A = ∠B = ∠C = ∠D = 90°

## Square

Parallelogram with all sides equal & all 4 angles 90°

So,

• AB ∥ CD & AD ∥ BC
• AB = BC = CD = AD
• ∠A = ∠B = ∠C = ∠D = 90°

Learn in your speed, with individual attention - Teachoo Maths 1-on-1 Class

### Transcript

One pair of parallel sides AB ∥ CD Two pairs of parallel lines AB ∥ CD AD ∥ BC Opposite two sides are equal AB = CD AD = BC Parallelogram with all sides equal & all 4 angles 90° So, AB ∥ CD & AD ∥ BC AB = BC = CD = AD ∠A = ∠B = ∠C = ∠D = 90° Parallelogram with all sides equal & all 4 angles 90° So, AB ∥ CD & AD ∥ BC AB = CD = AD = BC ∠A = ∠B = ∠C = ∠D = 90° Parallelogram with all sides equal & all 4 angles 90° So, AB ∥ CD & AD ∥ BC AB = BC = CD = AD ∠A = ∠B = ∠C = ∠D = 90°

#### Davneet Singh

Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 13 years. He provides courses for Maths, Science, Social Science, Physics, Chemistry, Computer Science at Teachoo.