Category: gcse



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


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