Category: gcse



  1. 3D geometry
  2. Angle at the centre of a circle is twice the angle at the circumference
  3. Angle in a semicircle is 90 degrees
  4. Angles in the same segment of a circle are equal
  5. Area and circumference of circles
  6. Area and perimeter
  7. Area and perimeter of quadrilaterals
  8. Area and perimeter of triangles
  9. Circle geometry
  10. Congruent and similar shapes
  11. Congruent shapes
  12. Congruent triangles
  13. Cosine rule
  14. Cube
  15. Cube surface area and net
  16. Decagons - polygons with 10 sides
  17. Dodecagons - polygons with 12 sides
  18. Einstein's proof of Pythagoras' theorem
  19. GCSE
  20. GCSE graphs
  21. GCSE measures
  22. Geometry
  23. Geometry basic rules
  24. Gradient of a line
  25. Graphs of sloping lines through the origin
  26. Hendecagons - polygons with 11 sides
  27. Heptagons - polygons with 7 sides
  28. Hexagons - polygons with 6 sides
  29. Horizontal, vertical and diagonal straight line graphs
  30. Interior and exterior angles of a polygon
  31. Line symmetry
  32. Loci
  33. Locus of points a fixed distance from a given line
  34. Locus of points a fixed distance from a given point
  35. Locus of points an equal distance between 2 lines
  36. Locus of points an equal distance between 2 points
  37. More quadrilaterals
  38. Nonagons - polygons with 9 sides
  39. Octagons - polygons with 8 sides
  40. Opposite angles in a cyclic quadrilateral add up to 180°
  41. Other types of polygon
  42. Parallel lines
  43. Parts of a circle
  44. Pentagons - polygons with 5 sides
  45. Perpendicular bisector of a chord
  46. Polygons
  47. Pythagoras
  48. Pythagoras' theorem
  49. Pythagoras' theorem proof
  50. Pythagorean triples
  51. Quadrilateral family tree
  52. Quadrilaterals
  53. Regular polygons
  54. Regular tessellations
  55. Rotational symmetry
  56. Similar shapes
  57. Similar triangles
  58. Similar triangles proof
  59. Sine rule
  60. Star polygons
  61. Straight line graphs
  62. Tangent and radius of a circle meet at 90°
  63. Tessellations and symmetry
  64. Transformations
  65. Translation
  66. Triangles
  67. Trigonometry
  68. Trigonometry and Pythagoras
  69. Two radii form an isosceles triangle
  70. Two tangents from a point have equal length
  71. Why are the trig functions called sine, cosine and tangent?
  72. n-gons - polygons with any number of sides


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