Fermi
·
Concept Library
·
Courses
·
Books
·
Problems
·
Simulations
·
Math Wiki
·
High School
Fermi
›
Problems
In a circle with centre
MATHEMATICS · Subjective · CBSE · Mathematics · Circles · Circles
Problem
In a circle with centre
O
O
O
,
∠
A
O
B
=
70
∘
\angle AOB = 70^{\circ}
∠
A
O
B
=
7
0
∘
and
∠
C
O
D
=
110
∘
\angle COD = 110^{\circ}
∠
C
O
D
=
11
0
∘
. Without measuring, which chord is longer,
A
B
AB
A
B
or
C
D
CD
C
D
? Give a reason for your answer in one sentence.
Related theory
Chord Properties
Circles
Perpendicular from centre to a chord
Browse the problem library