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−*Estimated Time 10 minutes+*Materials/ Resources needed: Laptop, geogebra file, projector and a pointer.+*Prerequisites/Instructions, if any
−# Circle and quadrilaterals should have been introduced.
−*Multimedia resources : Laptop
−*Website interactives/ links/ / Geogebra Applets
−<span> </span>
−*Process:+
+
+ Developmental Questions:+
−*
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−*
−''[http://karnatakaeducation.org.in/?q=node/305 Click to Comment]''
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===Activity#1 Cyclic quadrilateral ===
+===Objectives===
−===Estimated Time===
−10 minutes
−<span></span><div id="ggbContainer5061ec2b58633e074b0c05f395a3849d"></div><span></span>
+===Prerequisites/Instructions, prior preparations, if any===
−Circle and quadrilaterals should have been introduced.
+===Materials/ Resources needed===
+Laptop, geogebra file, projector and a pointer.
+===Process (How to do the activity)===
+<span></span><span></span>
# The teacher can recall the concept of a circle, quadrilateral, circumcircle.
# The teacher can recall the concept of a circle, quadrilateral, circumcircle.
# Can explain a cyclic quadrilateral and show the geogebra applet.
# Can explain a cyclic quadrilateral and show the geogebra applet.
# Move points, the vertices of the quadrilateral and let the students observe the sum of opposite interior angles.
# Move points, the vertices of the quadrilateral and let the students observe the sum of opposite interior angles.
−* Developmental Questions:
# What two figures do you see in the figure ?
# What two figures do you see in the figure ?
# Name the vertices of the quadrilateral.
# Name the vertices of the quadrilateral.
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*Question Corner
*Question Corner
# Can all quadrilaterals be cyclic ?
# Can all quadrilaterals be cyclic ?
−# What are the necessary conditions for a quadrilateral to be cyclic ?
+# What are the necessary conditions for a quadrilateral to be cyclic ? <span></span><span></span>
−<span> </span>
−<span></span><div id="ggbContainer7ac33d1e68b29e64169259c6189c0d53"></div><span></span>
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