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

Content descriptor

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.

Code

AC9M7M05

Year level

Year 7

Subject

Mathematics

Strand

Measurement

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Learning intention

We are learning to 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.

Cloze sentence

  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.

Related Year 7 Mathematics descriptors

• AC9M7A01Recognise and use variables to represent everyday formulas algebraically and substitute values into formulas to determine an unknown
• AC9M7A02Formulate algebraic expressions using constants, variables, operations and brackets
• AC9M7A03Solve one-variable linear equations with natural number solutions; verify the solution by substitution
• AC9M7A04Describe relationships between variables represented in graphs of functions from authentic data
• AC9M7A05Generate tables of values from visually growing patterns or the rule of a function; describe and plot these relationships on the Cartesian plane
• AC9M7A06Manipulate formulas involving several variables using digital tools, and describe the effect of systematic variation in the values of the variables
• AC9M7M01Solve problems involving the area of triangles and parallelograms using established formulas and appropriate units
• AC9M7M02Solve problems involving the volume of right prisms including rectangular and triangular prisms, using established formulas and appropriate units

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