Fermi
·
Concept Library
·
Courses
·
Books
·
Problems
·
Simulations
·
Math Wiki
·
High School
Fermi
›
Problems
Mathematics
Mathematics
Problem
In a circle with centre
O
O
O
, chord
A
B
AB
A
B
is equal in length to chord
C
D
CD
C
D
. Without measuring, identify which of the central angles
∠
A
O
B
\angle AOB
∠
A
O
B
and
∠
C
O
D
\angle COD
∠
C
O
D
is larger. Give a brief reason for your answer.
Browse the problem library