# QUADRILATERALS – EXERCISE 4.2.3 – Class 9

1. Construct quadrilaterals to the given measurements, the order of the letters is each case is A.B.C.D

AB = 4.8cm. BC = 4.4cm. CD = 7cm. DA = 3.4cm. BD = 6.2cm. Steps of construction

1. Draw AB = 4.8cm.
2. With A as centre and 3.4cm radius draw an arc.
3. With B as centre and 6.2cm as radius drawn an arc to intersect the first at D.

1. With B as centre and 4.4cm as radius drawn an arc.
2. With D as centre and 7cm as radius draw an arc to intersect the above at C.
3. Join DC and BC.

1. AB = 6.3cm. CD = 6.5cm. BC = 3.8cm. AC = 4.5cm. AD = 3.6cm.

Solution: Steps of construction:

1. Draw AB = 6.3cm
2. With A as centre and 4.5cm radius draw an arc.
3. With B as centre and 3.8cm as radius drawn another arc to intersect the above at C.
4. Join AC and BC.
5. With C as centre and 6.5cm as radius drawn an arc.
6. With A as centre and 3.6cm as radius draw another arc to intersect the above at D.

1. AB = CD = 5.2cm. BC = AD = 3.2cm. BD = 7.2cm.

Solution: Steps of construction:

1. Draw AB = 5.2cm
2. With A as centre and 3.2cm radius draw an arc.
3. With B as centre and 7.2cm as radius drawn another arc to intersect the above at D.
5. With B as centre and 3.2cm as radius drawn an arc.
6. With D as centre and 5.2cm as radius draw another arc to intersect the above at C.
7. Join BC and DC.

1. AC = 5.8cm. BD = 5cm. AB = 3.8cm. BC = 5.5cm. CD = 4.5cm

Solution: Steps of construction:

1. Draw AB = 3.8cm
2. With A as centre and 5.8cm radius draw an arc.
3. With B as centre and 5.5cm as radius drawn another arc to intersect the above at C.
4. Join AC and BC.
5. With B as centre and 5cm as radius drawn an arc.
6. With C as centre and 4.5cm as radius draw another arc to intersect the above at D.
7. Join CD, BD and AD.

1. AC = 5.8cm. BD = 5.6cm. AB = 3.5cm. AD = 4.9cm. CD = 4cm.

Solution: Steps of construction:

1. Draw AB = 3.5cm
2. With A as centre and 4.9cm radius draw an arc.
3. With B as centre and 5.6cm as radius drawn another arc to intersect the above at D.
5. With A as centre 5.8cm as radius draw an arc.
6. With D as centre and 4cm as radius draw another arc to intersect the above at C.
7. Join DC, AC and BC.

1. AC= 6cm. BD = 5.8cm. AB = 3.4cm. AD = 5.2cm. BC = 4.2cm.

Solution: Steps of construction:

1. Draw AB = 3.4cm
2. With A as centre and 6cm radius draw an arc.
3. With B as centre and 4.2cm as radius drawn another arc to intersect the above at C.
4. Join AC and BC.
5. With A as centre 5.2cm as radius draw an arc.
6. With B as centre and 5.8cm as radius draw another arc to intersect the above at D.
7. Join AD, BD and CD.

## 7 thoughts on “QUADRILATERALS – EXERCISE 4.2.3 – Class 9”

1. Vinitha says:

I wish i had a mentor like this back in school! I used o struggle alot in Maths as i was really weak.
Maths brings alot of gud childhood memories!

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1. breathmath says:

🙂 i wish these posts helps the one who needs it 🙂

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1. Vinitha says:

Are u a Math professor?

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2. breathmath says:

yep

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3. Vinitha says:

Great!

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4. breathmath says:

thank you 🙂

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