ACARA AC9M7M05, Angle sum of shapes
Year 7 · Measurement
Show that the interior angles of a triangle add to 180 degrees and use this to find the angle sum of other shapes and unknown angles.
Below are free printable maths worksheets that support AC9M7M05. Print them as PDFs, or generate a fresh one. Every maths answer key is computed in code, so it is never wrong.
Teaching guide
What students learn
Show that the interior angles of a triangle add to 180 degrees and use this to find the angle sum of other shapes and unknown angles.
Worked example
Two angles on a straight line are 42 degrees and x degrees. Find x.
Answer: 138 degrees
Why: 180 - 42 = 138
Generated and checked in code, so it is correct.
Geometry worksheets
All geometry worksheets →Australian Curriculum content descriptions (c) ACARA, used under CC BY 4.0. Descriptions are paraphrased. See australiancurriculum.edu.au.