Please note: This site contains links to websites not controlled by the Australian Government or ESA. Read more in the Terms of Use.
Classify triangles
This GeoGebra applet interactive allows students to move the points of a triangle and observe the changes in angles and side lengths, and find out the names of the triangles formed.
- Resource details
- Year level
- Year 7
- Purpose
- Teaching resource
- Strand
- Space
- Topic
- Shapes and objects
- Audience
- Teachers
- Format
- Interactive
- Australian Curriculum code
- AC9M7SP02
- Numeracy progression
- Understanding geometric properties (P4)
- Publisher
- GeoGebra
- Copyright
- © 2021 GeoGebra. Free-for-education material.
- Keywords
- acute angle obtuse angle equilateral isosceles scalene
Related resources
-
Orthographic views
Views of a three-dimensional object from different directions.
Resource details -
Geometric drawing
This resource provides detailed explanations of the curriculum content, worked examples and assessment questions related to drawing representations of solid objects.
Resource details -
Shapes and objects: Year 7 – planning tool
This planning resource for Year 7 is for the topic of Shapes and objects.
Resource details -
Making triangles
Students study the concept of triangle inequality, which determines if three positive numbers can serve as the side lengths of a triangle. This principle states that a triangle is possible if the largest of the three numbers is smaller than the sum of the other two. To explore this, students experiment with various combinations of three natural numbers.
Resource details -
Combined transformations inquiry
Investigating combinations of translations, reflections and rotations and describing on the Cartesian plane using coordinates. Identify line and rotational symmetries.
Resource details -
Polygons and objects (10 lessons)
In this sequence of 10 lessons, students prove angle sum rules, classify quadrilaterals, draw 3D views in 2D, and apply volume and geometric reasoning to problems.
Resource details -
Prism nets
In this activity students can ‘unwrap’ and turn the net of a prism to view it from different perspectives.
Resource details -
Rectangle ratios inquiry 1
Establish formulas for area of rectangles and use these in problem-solving. Recognising and solving simple ratios.
Resource details