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Plane Figures

Plane Figures. Triangles. acute-angled triangle. equilateral triangle. obtuse-angled triangle. isosceles triangle. isosceles right-angled triangle. right-angled triangle. Quadrilaterals. Parallelogram. Square. Rectangle. Trapezium. Kite. Rhombus. Cyclic Quadrilateral. Polygons.

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Plane Figures

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  1. Plane Figures

  2. Triangles acute-angled triangle equilateral triangle obtuse-angled triangle isosceles triangle isosceles right-angled triangle right-angled triangle

  3. Quadrilaterals Parallelogram Square Rectangle Trapezium Kite Rhombus Cyclic Quadrilateral

  4. Polygons Convex Polygon Concave Polygon

  5. Triangle Quadrilateral Hexagon Pentagon Octagon Heptagon Decagon Nonagon 12 Dodecagon Hendecagon Polygons 4 5 6 3 8 9 7 10 11 16 20 Icosagon Hexadecagon

  6. Regular Polygons

  7. 3-D Figures

  8. cuboid cube (prism) (prism) cylinder frustum cone pyramid prism sphere hemisphere 3-D Figures

  9. Tetrahedron F = 4 V = 4 E = 6 Cube F = 6 V = 8 E = 12 Regular Polyhedra Octahedron F = 8 V = 6 E = 12 Icosahedron F = 20 V = 12 E = 30 Dodecahedron F = 12 V = 20 E = 30

  10. Circle

  11. Centre, Radius, Circumference circumference Centre radius

  12. Chord chord diameter

  13. Arc arc AB (minor arc) semi-circle arc AXB (major arc)

  14. Angle at Centre AOB is an angle at the centre subtended by the arc APB (or chord AB)

  15. Angle at Circumference APB is an angle at the circumference subtended by the arc AB (or chord AB)

  16. Sector semi-circle major sector AOB minor sector AOB

  17. Segment semi-circle segment APB (major segment) segment AQB (minor segment)

  18. A B E C D Concyclic Points A, B, C, D and E are concyclic

  19. Cyclic Quadrilateral A D ABCD is a cyclic quadrilateral B C

  20. Tangent secant tangent point of contact

  21. Centres of a Triangle

  22. Centroid median

  23. Circumcentre Perpendicular bisector

  24. Circumcentre circumscribed circle

  25. I Incentre angle bisector

  26. Incentre inscribed circle

  27. Orthocentre altitude

  28. Centres of a Triangle Incentre Centroid Angle Bisector Median Orthocentre Circumcentre Perpendicular Bisector Altitude

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