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Similar shapes (lengths). Tutorial
Similar shapes (area and volume). Tutorial
Congruent triangles (not part of 1.6 but useful). Tutorial
Pythagoras' Theorem. Video tutorial 1, Video tutorial 2, video tutorial 3 moving away from right angled triangles. Revision notes. Revision questions, answers
Trigonometry. Video tutorial introduction to Trig, Finding missing sides video 1, Finding missing sides and angles video 2 and 3, Alternative video for finding missing sides.
Trig revision notes, Questions and answers
3D Trig and Pythagoras. Tutorial
Sine and cosine rule. Tutorial sine rule. Cosine rule