Angles, Triangles & Pythagoras

Angle Types – acute, right, obtuse, straight, reflex, complementary, and supplementary.

Triangles – scalene, isoceles, equilateral, and right

Triangle centres – incentre (and incentre), circumcentre (and circumcircle), centroid (and barycentre), orthocentre.

Pythagoras' Theorem – including ways to prove Pythagoras' theorem with algebra and visually.

Pythagorean Triples – also Pythagorean quadruples and the famous Fermat's Last Theorem.

Pythagoras & Trigonometry Revision – a few sample questions to see if the principles are understood, with pop-up answers.