Apply angle facts, triangle congruence, similarity and properties of quadrilaterals to derive results about angles and sides, including Pythagoras' Theorem, and use known results to obtain simple proofs

1. By degrees: Calculate triangle angles from a given ratio
2. Simply Similar 2 - select correct similarity test for given triangles
3. Simply Similar 1 - select correct similarity test for given triangles
4. Convincingly Congruent 3 - select correct congruency test for given triangles
5. Convincingly Congruent 2 - select correct congruency test for given triangles
6. Convincingly Congruent 1 - select correct congruency test for given triangles
7. Convincingly Congruent and Simply Similar 2 - identify congruent and similar shapes
8. Convincingly Congruent and Simply Similar 1 - identify congruent and similar shapes
9. Leaning In On The Angles - angle sum of a quadrilateral
10. ABCs 2 - angle sum of quadrilateral, degrees in revolution
11. Shape Up! 16 - calculate value of x, angle sum of quadrilateral, algebraic expression
12. Shape Up! 12 - calculate angle size, angle sum of a quadrilateral, algebraic expression
13. Shape Up! 11 - calculate angle size, angle sum of a triangle
14. Phoebe's Quadrilateral Quizz - angles of a rectangle
15. Phoebe's Quirky Quadrilateral Quandaries 4 - identify square from properties
16. Phoebe's Quirky Quadrilateral Quandaries 3 - diagonal properties of a rhombus
17. Phoebe's Quirky Quadrilateral Quandaries 2 - sides and angles of a parallelogram
18. Phoebe's Quirky Quadrilateral Quandaries 1 - angle sum of a quadrilateral
19. Phoebe's Triangle Theorems 4 - sides and angles of equilateral triangles
20. Phoebe's Triangle Theorems 3 - equal angles opposite equal sides
21. Phoebe's Triangle Theorems 2 - exterior angle of triangle
22. Shape Up! 7 - equilateral triangle, angle sum of triangle
23. Shape Up! 6 - triangle geometry, equilateral and isosceles
24. Shape Up! 3 - identify equal angles
25. Shape Up! 2 - deduce type of triangle
26. Shape Up! 1 - exterior angles of a triangle
27. Circular Logic 5 - concyclic quadrilaterals
28. Around in Circles 11 - circle geometry
29. Around in Circles 10 - circle geometry
30. Around in Circles 9 - circle geometry
31. Around in Circles 8 - circle geometry