Category: gcse



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


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