Circle Theorems; Geometrical Proof (Higher  Unit 3)
Topic:  Circle Theorems; Geometrical Proof 
Estimated teaching time:  Higher 2.5 hours  3.5 hours 
Specification references (in recommended teaching order)
G1.5h  Distinguish between centre, radius, chord, diameter, circumference, tangent, arc, sector and segment. Know and use circle theorems. View assessment guidance > 
G1.1  Recall and use properties of angles at a point, angles at a point on a straight line (including right angles), perpendicular lines and opposite angles at a vertex. View assessment guidance > 
G1.2  Understand and use the angle properties of parallel and intersecting lines, triangles and quadrilaterals. View assessment guidance > 
G1.3  Calculate and use the sums of the interior and exterior angles of polygons View assessment guidance > 
G1.8h  Understand congruence and similarity. Use similarity. Understand and use conditions for congruent triangles. View assessment guidance > 
G2.3  Justify simple geometrical properties. Simple geometrical proofs. View assessment guidance > 
Teaching resources

Circle Thoerems  Lesson Plan  Angle at Centre and Related Proof

Circle Theorems  Lesson Plan  Alternate Segment

Circle Theorems  Angle at the centre and related proofs

Circle Theorems  Angle at the centre and related proofs

Circle Theorems  Alternate Segment Theorem

Circle Theorems  Alternate Segment Theorems

Circle theorems; geometrical proof  Homwork Sheet and Mark Scheme
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Please note that, due to the overlap of C/D questions, some material may have been tagged as appropriate for both Foundation and Higher tier. Equally, due to the nature of some questions, different parts of a question may assess different topics. Teachers are advised to ensure learners have covered all of the question content before using such questions.