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DSE Circle-ACT05A Exterior Angle of a Cyclic Quadrilateral
Author:
MrWat@SFCC(HK)
Topic:
Angles
,
Circle
GeoGebra
1. You can change the cyclic quadrilateral
ABCD
by moving the points
A
,
B
,
C
and
D
. 2. Where is
in this figure? Try to describe
in different ways. 3. How to find
quickly?
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