9th mathematics NCERT exercise questions with answers, Mathematics

Circles – Exercise 10.2 – Class IX

Recall that two circles are congruent if they have the same radii. Prove that equal chords of congruent circles subtend equal angles at their centres. Solution: Two congruent circles with centres O and O′. AB and CD are equal chords of the circles with centres O and O′  respectively. To Prove : ∠AOB = ∠CO’D… Continue reading Circles – Exercise 10.2 – Class IX

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9th mathematics NCERT exercise questions with answers, Mathematics

Circles – Exercise 10.1 – Class IX

Fill in the blanks : (i) The centre of a circle lies in ___________ of the circle. (exterior/ interior) (ii) A point, whose distance from the centre of a circle is greater than its radius lies in __________ of the circle. (exterior/interior) (iii) The longest chord of a circle is a __________ of the circle.… Continue reading Circles – Exercise 10.1 – Class IX