circle grade 6 math power poinyt presentation cambridge board

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1. CIRCLE Activity

2. The distance around the edge of the circle

3. A tangent to a circle is a straight line that just touches the circumference at one point and does not cut through it.

4. Work book Page 5,6, and 7

5. Work book Page 5,6, and 7

6. b. A circle with three radii drawn, one of them labelled 3 cm c. A circle diameter of 5 cm with a chord 4 cm drawn horizontally and a perpendicular line drawn from the centre to the chord. d. A circle radius of 2 cm with two parallel tangents drawn on each side of the circle. Work book Page 5,6,7,8 and 9

7. Work book Page 8 and 9

8. a) always true b) sometimes true c) always true d) sometimes true Work book Page 8 and 9

9. 3D shapes 3D shapes have Faces Edges and vertices A cube has 6 faces

10. A prism is a 3D shape with the same cross- section all the way along its length. We name the prism using the name of the shape on its cross section Triangular prism.

11. Octagonal prism

12. Pyramid Pyramid can have different shaped bases. The other faces of pyramid are all triangles which meet at a single vertex We name the pyramid using the shape of the base Tetrahedron

13. Identify the shape SPHERE HEMISPHERE CYLINDER CONE Work book page no 10 and 11

14. VERTICES- EDGES- FACES- Work book page no 10 and 11

15. tetrahedron cone pyramid with pentagon base hexagonal prism Hemisphere pentagonal prism Work book page no 10 and 11

16. a) 8 vertices, 12 edges, 6 faces b) 6 vertices, 9 edges, 5 faces c) 4 vertices, 6 edges, 4 faces d) 7 vertices, 12 edges, 7 faces e) 10 vertices, 15 edges, 7 faces a, b, c homework

17. A cube has six square faces. A hexagonal prism has eight faces, two are hexagons and six are rectangles A square-based pyramid has five faces, one square and four triangles A cuboid has six rectangular faces An octagonal pyramid has nine faces, one octagon and eight triangles Q4, Q5 and Q9 Home work

18. a cube has six square faces, a cuboid has six rectangular faces a pyramid tapers to a point, a prism has a constant cross-section a cone has a circular base , a pyramid has a polygonal base 7. A cube is a prism with a square base. 8. It could be a pyramid with a pentagonal base to give 6 faces