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In a circle with centre
MATHEMATICS · Subjective · CBSE · Mathematics · Circles · Circles
Problem
In a circle with centre
O
O
O
, chord
A
B
AB
A
B
has midpoint
M
M
M
. Explain why
∠
O
M
B
=
90
∘
\angle OMB = 90^{\circ}
∠
O
M
B
=
9
0
∘
.
Related theory
Chord Properties
Circles
Perpendicular from centre to a chord
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