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9th Tamil Nadu Board
IMPORTANT
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Is circle, a polygon?

Important Questions on Geometry

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9th Tamil Nadu Board
IMPORTANT
Mathematics Standard 9>Chapter 4 - Geometry>Progress Check>Q 1
The radius of the circle is 25 cm and the length of one of its chord is 40 cm. Find the distance of the chord from the centre.
EASY
9th Tamil Nadu Board
IMPORTANT
Mathematics Standard 9>Chapter 4 - Geometry>Progress Check>Q 2
Draw three circles passing through the points P and Q, where PQ=4 cm.
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9th Tamil Nadu Board
IMPORTANT
Mathematics Standard 9>Chapter 4 - Geometry>Progress Check>Q i
Draw the outline of different size of bangles and try to find out the centre of each using set square.
MEDIUM
9th Tamil Nadu Board
IMPORTANT
Mathematics Standard 9>Chapter 4 - Geometry>Progress Check>Q ii

Trace the given crescent and complete as full moon using ruler and compass.

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MEDIUM
9th Tamil Nadu Board
IMPORTANT
Mathematics Standard 9>Chapter 4 - Geometry>Exercise>Q 1
The diameter of the circle is 52 cm and the length of one of its chord is 20 cm. If the distance of the chord from the centre is k cm then find the value of k.
MEDIUM
9th Tamil Nadu Board
IMPORTANT
Mathematics Standard 9>Chapter 4 - Geometry>Exercise>Q 2
The chord of length 30 cm is drawn at the distance of 8 cm from the centre of the circle. If the radius of the circle is k cm then find the value of k.
MEDIUM
9th Tamil Nadu Board
IMPORTANT
Mathematics Standard 9>Chapter 4 - Geometry>Exercise>Q 3
Find the length of the chord AC where AB and CD are the two diameters perpendicular to each other of a circle with radius 42 cm and also find ∠OAC and ∠OCA.
MEDIUM
9th Tamil Nadu Board
IMPORTANT
Mathematics Standard 9>Chapter 4 - Geometry>Exercise>Q 4
A chord is 12 cm away from the centre of the circle of radius 15 cm. If the length of the chord is k cm then find the value of k.