Cyclic Geometry Theorem 6

Cyclic Geometry
THEOREM 6

lesson objectives
By the end of the lesson, learners should be
able to:
•Identify opposite angles in a Cyclic
Quadrilateral.(remove)
•Apply the theorem that opposite angles of a
cyclic quadrilateral are supplementary (sum to
180°) to calculate unknown angles.
•Use the theorem to prove whether a
quadrilateral is cyclic quadrilateral.

Prior lesson Recap
1.What is a cyclic quadrilateral?
cyclic quadrilateral is a four-sided polygon
(quadrilateral) whose vertices all lie on the
circumference of the circle.
2.What are supplementary angles?
Two angles that sum up to180°
3.State the theorem 6 that you learnt on Monday
The sum of opposite angles in a cyclic
quadrilateral are supplementary (add up to 180°)

Prior lesson Recap