- MA4-GEO-C-01 identifies and applies the properties of triangles and quadrilaterals to solve problems
📖 Prior Knowledge
| Content | Prior knowledge | Used for |
|---|---|---|
| Two-dimensional Spatial Structure A | - classifying triangles | - classifying triangles and quadrilaterals |
| Equations | - two-step equations | - solving harder angle problems |
| Angle Relationships | - angle relationships involving transversals and parallel lines - formal reasoning when solving angle problems | - proof of interior angle sum of a triangle - harder problems involving angle sum of triangle and quadrilateral |
Classify triangles according to their side and angle properties.pdf
- Label triangles using appropriate text and symbols
- Classify and describe types of triangles based on their properties, including acute-angled, right-angled, obtuse-angled, equilateral, isosceles and scalene triangles
Classify quadrilaterals and describe their properties.pdf
- Identify quadrilaterals using naming conventions
- Distinguish between convex and non-convex quadrilaterals
- Verify and describe the properties of the special quadrilaterals which include parallelograms, rectangles, rhombuses, squares, trapeziums and kites
- Identify and label the properties of the special quadrilaterals using appropriate conventions
- Classify quadrilaterals based on their properties
- Justify why some quadrilaterals may be classified as more than one type of quadrilateral
Apply the properties of triangles and quadrilaterals.pdf
- Prove that the interior angle sum of a triangle is 180° with or without digital tools
- Prove that any exterior angle of a triangle equals the sum of the 2 interior opposite angles
- Apply the angle sum of a triangle to prove that the angle sum of a quadrilateral is 360°
- Apply the properties of triangles and quadrilaterals to determine unknown sides and angles to solve problems, giving reasons