Sum of angles at point of intersection of diagonals in a quadrilateral
From Karnataka Open Educational Resources
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.
