Math Games

Secondary 2 - Measurement and Geometry

Standard 8.MD.1 - Determine the symmetry of a two dimensional shape in relation to an axis of symmetry.

Included Skills:

Angles, triangles and polygons
• 1.1 properties of special quadrilaterals and regular polygons (pentagon, hexagon, octagon and decagon) including symmetry properties
• 1.2 classifying special quadrilaterals on the basis of their properties
• 1.3 angle sum of interior and exterior angles of any convex polygon
• 1.4 properties of perpendicular bisectors of line segments and angle bisectors
• 1.5 construction of simple geometrical figures from given data (including perpendicular bisectors and angle bisectors) using compasses, ruler, set squares and protractors, where appropriate
• 1.6 Use GSP or other dynamic geometry software to explore a given type of quadrilateral (e.g. parallelogram) to discover its properties, e.g. diagonals of a parallelogram bisect each other.
• 1.7 Investigate the sum of the interior and exterior angles of polygon and obtain the formulae for them.
• 1.8 Recognise symmetric properties (rotational and line symmetry) in some special quadrilaterals and regular polygons.
• 1.9 Justify whether a mathematical statement is true or false.
• 1.10 Use GSP or other dynamic geometry software to construct and study the properties of the perpendicular bisector of a line segment and the bisector of an angle.