Polygon angle theorems Image

Please note: This site contains links to websites not controlled by the Australian Government or ESA. More information here.

Go to website

Polygon angle theorems

This GeoGebra applet interactive allows students to explore the angle sums of polygons by finding the triangles inside the polygon.

Additional details

Year level(s) Year 7
Audience Teacher
Purpose Teaching resource
Format Interactive
Teaching strategies and pedagogical approaches Explicit teaching
Keywords angle sum, polygons

Curriculum alignment

Strand and focus Space
Topics Angles and geometric reasoning
AC: Mathematics (V9.0) content descriptions
AC9M7M04
Identify corresponding, alternate and co-interior relationships between angles formed when parallel lines are crossed by a transversal; use them to solve problems and explain reasons

AC9M7M05

Demonstrate that the interior angle sum of a triangle in the plane is 180° and apply this to determine the interior angle sum of other shapes and the size of unknown angles


Numeracy progression Understanding geometric properties (P6)

Copyright details

Organisation

GeoGebra

Copyright

© 2021 GeoGebra. Free-for-education material.