State the theorem about equal chords and their distances from the centre, and its converse.
Circle
Original Khojo Papers practice question — not from a past board paper.
5 cm and 12 cm respectively.
No citable source has been recorded for this record. Treat it as practice material, not as fact.
Half of each chord with the radius forms a right-angled triangle: √(169 − 144) = 5 and √(169 − 25) = 12.
From the same topic and chapter, at a similar level.
State the theorem about equal chords and their distances from the centre, and its converse.
Circle
A chord of length 16 cm is drawn in a circle of radius 10 cm. Find its distance from the centre.
Circle
State two theorems about equal chords of a circle.
Circle
The perpendicular from the centre of a circle to a chord:
Circle
State the theorem about the perpendicular from the centre of a circle to a chord.
Circle
Factorise x4 − 81.
Factorisation