Difference between revisions of "Sum of angles at point of intersection of diagonals in a quadrilateral"
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===Estimated Time=== | ===Estimated Time=== | ||
| + | 30 minutes | ||
=== Prerequisites/Instructions, prior preparations, if any === | === Prerequisites/Instructions, prior preparations, if any === | ||
| + | Prior knowledge of point, lines, angles, intersecting lines, vertically opposite angles, properties of triangle | ||
===Materials/ Resources needed=== | ===Materials/ Resources needed=== | ||
| + | * Digital : Computer, geogebra application, projector. | ||
| + | * Non digital : Worksheet and pencil | ||
| + | * Geogebra files : [https://ggbm.at/f9wc48xe Sum of angles at point of intersection of diagonals in a quadrilateral.ggb] | ||
| + | {{Geogebra|f9wc48xe}} | ||
| + | |||
===Process (How to do the activity)=== | ===Process (How to do the activity)=== | ||
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Revision as of 06:45, 16 May 2019
A diagonal is the line segment that joins a vertex of a polygon to any of its non-adjacent vertices. This two diagonals of a quadrilateral form angle, this activity explores property of these angles.
Objectives
To understand sum of angles at the point of intersection of diagonal of a quadrilateral is 360°.
Estimated Time
30 minutes
Prerequisites/Instructions, prior preparations, if any
Prior knowledge of point, lines, angles, intersecting lines, vertically opposite angles, properties of triangle
Materials/ Resources needed
- Digital : Computer, geogebra application, projector.
- Non digital : Worksheet and pencil
- Geogebra files : Sum of angles at point of intersection of diagonals in a quadrilateral.ggb
Download this geogebra file from this link.