Page 1 - Lesson note-6 Cyclic Quadrilateral Ch. 10 circle
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SAI International School
CLASS - IX
Mathematics
Chapter-10: Circle Lesson Notes-6
SUBTOPIC : Cyclic Quadrilaterals
Cyclic Quadrilaterals :
A quadrilateral ABCD is called cyclic if all the four vertices of it lie on a circle.
Theorem 10.11: The sum of either pair of opposite angles of a cyclic quadrilateral is 180º.
