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→Concept # 3. Theorems on cyclic quadrilaterals
==Concept # 3. Theorems on cyclic quadrilaterals==
==Concept # 3. Theorems on cyclic quadrilaterals==
===Learning objectives===
===Learning objectives===
# Both pairs of opposite angles of a cyclic quadrilateral are supplementary.
# When one side of a cyclic quadrilateral is produced, the exterior angle so formed is equal to the interior opposite angle.<br>
Converse theorems:
# Suppose a quadrilateral is such that the sum of two opposite angles is a straight angle, them the quadrilateral is cyclic.
# If the exterior angle of a quadrilateral is equal to the interior opposite angle, then the quadrilateral is cyclic.
===Notes for teachers===
===Notes for teachers===
===Activity No ===
===Activity No ===