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Transcript
Nayland College YEAR 9 – GEOMETRY – Angles Name _________________ Form ______________ Achieve: I can Estimate Angles Use a protractor to find the size of unknown angles up to 180° Use a protractor to find the size of unknown angles from 180° to 360° Use letters to name angles eg <ABC Identify angle types: Acute, Right, Obtuse, Straight, Reflex Calculate angles: on a line which add to 180 Calculate angles: opposite which are equal Calculate angles: at a point which add to 360 Calculate angles: in triangle which add to 180 Calculate angles: on parallel lines – Corresponding, Alternate Calculate angles: on parallel lines – Co-interior Identify polygon types Merit: I can Give reasons when I solve simple (1 step) angle problems Specify a direction using bearings Calculate angles: in an isosceles triangle Calculate angles: in a clock face Calculate Interior angles in a polygon Calculate Exterior angles in a polygon Identify and describe polygon properties and features Excellence: I can Solve 2 step angle problems, giving reasons Circles geometrical properties 1 2