Geometrical properties: polygons

I can calculate with angles at a point, angles on a line and vertically opposite angles.

I can confidently state the sums of the angles around a point and on a straight line.

I can classify triangles and know their relevant properties.

I can use conventional terms and notations for lines, rays, segments and angles.

I can recognise that a pair of parallel lines traversed by a straight line produces equal corresponding angles.

I can recognise that a pair of parallel lines traversed by a straight line produces equal alternate angles.

I can recognise that a pair of parallel lines traversed by a straight line produces supplementary co-interior angles.

I can use facts about a pair of parallel lines traversed by a straight line.

I can demonstrate and prove that in a triangle, the sum of the interior angles is 180°.

I can use the fact that the interior angles of any triangle sum to 180° to find the size of missing angles.

I can find the interior angle of any polygon.

I can use reasoning to derive the sum of interior angles in multiple ways.

I can find the sum of the exterior angles of a polygon.

I can find the interior and exterior angles of regular polygons.

I can solve problems that require a combination of angles facts to identify values of missing angles, providing explanations of reasoning and logic used.

I can use my knowledge of polygons to solve problems.