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A quadrilateral ABCD is called cyclic if all four vertices of it lie on a circle.In a cyclic quadrilateral the sum of opposite interior angles is 180 degrees.If the sum of a pair of opposite angles of a quadrilateral is 180, the quadrilateral is cyclic.In a cyclic quadrilateral the exterior angle is equal to interior opposite angle.
===Objectives===
===Objectives===
Understanding cyclic quadrilaterals
Relation between angles of a cyclic quadrilateral.
===Estimated Time===
===Estimated Time===
10 minutes
10 minutes
===Materials/ Resources needed===
===Materials/ Resources needed===
Laptop, geogebra file, projector and a pointer.
Digital : Laptop, geogebra file, projector and a pointer.
Geogebra file: [https://ggbm.at/jdxxnrmb Cyclic quadrilateral.ggb]
{{Geogebra|jdxxnrmb}}
===Process (How to do the activity)===
===Process (How to do the activity)===