Revision: Geometry and Measurement

Cambridge Board > O-Levels Year-4 > Math (Total Videos: 298)

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Chapter 10: Revision: Geometry and Measurement (76 videos)   (Practice Test)
10.1: Angles, Triangles and Polygons
  1. Alternate and corresponding Angles
  2. Problem 1: Alternate and corresponding Angles
  3. Concept of Alternate Interior Angles
  4. Concept of Interior Angles
  5. Problem- Finding Angles Formed by a Transversal
10.2: Congruence and similarity
  1. Similar Triangles
  2. Problem-Similar Triangles
10.3: Pythagoras' theorem and trigonometry  (Practice Test)
  1. Area of Equilateral Triangle with Given Sides
  2. More on Area of a Triangle with Given Sides
  3. Trigonometric Ratios of an Acute Angle
  4. Problem-Trigonometric Ratios of An Acute Angle
  5. Trigonometric ratios of 45 degree
  6. Problem-Trigonometric Ratios of An Angle of 45 Degree
  7. Trigonometric ratios of 30 degree and 60 degree
  8. Problem-Trigonometric Ratios of Angles of 30 & 60 Degree
  9. Trigonometric Ratios of an Complementary Angles
  10. Problem 1: Trigonometric Ratios of an Complementary Angles
  11. Concept of Angle of Elevation & Depression
  12. Problem 1: Concept of Angle of Elevation & Depression
  13. Engineering and Heights and Distances
  14. More on Engineering and Heights and Distances
  15. Problem1-Engineering and Heights and Distances
  16. Problem2-Engineering and Heights and Distances
  17. when one Side & Angle of Elevation are Given
  18. Problem-When one Side & Angle of Elevation are Given
  19. Problem 1: when one Side & Angle of Elevation are Given
  20. Problem 2: when one Side & Angle of Elevation are Given
  21. when One Side & Angle of Depression are Given
  22. Problem 1: when One Side & Angle of Depression are Given
  23. Problem2-when One Side & Angle of Depression are Given
  24. when Hypotenuse & Angle of Elevation are Given
  25. Problem 1: when Hypotenuse & Angle of Elevation are Given
  26. when Given Sides-Angle of Elevation-Depression
  27. Problem 1: when Given Sides-Angle of Elevation-Depression
  28. Problem 2: when Given Sides-Angle of Elevation-Depression
  29. Bearing
  30. Compass and True Bearing
10.4: Mensuration  (Practice Test)
  1. Relationship of Radius-Central Angle-Arc Length
  2. Problem 1: Relationship of Radius-Central Angle-Arc Length
  3. Problem2-Relationship of Radius-Central Angle-Arc Length
  4. Area of a Circular Sector.
  5. Problem 1: Area of a Circular Sector.
  6. Problem2-Area of a Circular Sector.
  7. Problems Using Arcs and Sectors
  8. More on Problems Using Arcs and Sectors
10.5: Geometrical transformation and symmetry  (Practice Test)
  1. Intercepts and Symmetry
  2. Line of symmetry
  3. Symmetric shapes on square grid
  4. Symmetric shapes on dot pattern
  5. Reflexive symmetry
  6. Rotational symmetry
  7. Identify all lines of symmetry of a shape
  8. Point of rotation and order of rotational symmetry
10.6: Coordinate geometry  (Practice Test)
  1. Normal Form of Equation of Straight Line
  2. Problem1-Normal Form of Equation of Straight Line
  3. Collinear and Non-collinear Points
  4. Problem 1: Collinear points and Non-collinear points
  5. Perpendicular- Parallel lines
  6. Problem 1: Perpendicular and parallel lines
10.7: Vectors
  1. Position Vectors
  2. Problem-Position Vectors
10.8: Properties of circles  (Practice Test)
  1. Proof-2 Tangents can be Drawn to Circle from Point
  2. More on Proof-2 Tangents can be Drawn to Circle from Point
  3. Length of Tangent to Circle
  4. To Prove Circles Diameter is 2 Times its Radius
  5. Chords Perpendicular Passes Centre of Circle
  6. More on Chords Perpendicular Passes Centre of Circle
  7. Line From Centre and Midpoint of Chord is Perp to it
  8. More on Line From Centre and Midpoint of Chord is Perp to it
  9. Congruent Chords are Equidistance from Centre of Circle
  10. More on Congruent Chords are Equidistance from Centre of Circle
  11. Angle in Semi-Circle is Right Angle
  12. More on Angle in Semi-Circle is Right Angle
  13. Perpendicular Radial Segment is Tangent to Circle
  14. More on Perpendicular Radial Segment is Tangent to Circle
  15. Tangent to Circle is Perpendicular to Radial Segment