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SHAPES

SHAPES. PRESENTED BY: A.PARAMESWARI PRT(ADHOC),KV-TVR. Objective: To describe properties of solid shapes such as perpendicular and parallel lines, faces and edges. PART 1 SOLID SHAPES. Two-dimensional Shapes (2D). These shapes are flat and can only be drawn on paper.

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SHAPES

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  1. SHAPES PRESENTED BY: A.PARAMESWARI PRT(ADHOC),KV-TVR

  2. Objective:To describe properties of solid shapessuch as perpendicular and parallel lines, faces and edges

  3. PART 1SOLID SHAPES

  4. Two-dimensional Shapes (2D) • These shapes are flat and can only be drawn on paper. • They have two dimensions – length and width. • They are sometimes called plane shapes.

  5. Three-dimensional Shapes (3D) • These shapes are solid or hollow. • They have three dimensions – length, width and height.

  6. Face • Part of a shape that is flat.(Or curved) • E.g. A cube has 6 of these.

  7. Edge • The line where two faces meet. • E.g. A cube has 12 of these.

  8. Vertex (Vertices) • The place where three or more edges meet. • This pyramid has 4 of these.

  9. Parallel • These type of lines stay the same distance apart for their whole length. They do not need to be straight or the same length.

  10. Perpendicular • A line that is drawn in a right angle to another line . • In solid shapes edges could be at a right angle to one another. • Faces could also be at right angles to one another.

  11. Cube • A three-dimensional shape which has 6 square faces all the same size. Some faces parallel Some edges parallel Some faces perpendicular Some edges perpendicular

  12. Cuboid • A three-dimensional shape which has 6 rectangular faces. Some faces parallel Some edges parallel Some faces perpendicular Some edges perpendicular

  13. Sphere • A perfectly round three-dimensional shape, like a ball. It has only one curved face. No parallel faces or edges No perpendicular faces or edges

  14. Hemisphere • A three-dimensional shape that is half a sphere. No parallel faces or edges No perpendicular faces or edges

  15. Cone • A three dimensional shape with a circle at its base and a pointed vertex. No parallel faces or edges No perpendicular faces or edges

  16. Cylinder • A three-dimensional shape with circular ends of equal size. Some faces parallel Some edges parallel Some faces perpendicular No edges perpendicular

  17. Pyramid • A three-dimensional shape which has a polygon for its base and triangular faces which meet at one vertex. • E.g. Triangular pyramid • Square pyramid • Hexagonal pyramid • Pentagonal pyramid

  18. Square base pyramid No faces parallel Some edges parallel No faces perpendicular Some edges perpendicular

  19. Prism • A three dimensional shape that has the same cross-section all along its length.

  20. Written task SOME PARALLEL FACES NO PARALLEL FACES Cube Cuboid SOME PERPENDICULAR FACES Cone Square based- Pyramid Sphere Hemispere NO PERPENDICULAR FACES

  21. Written task SOME PARALLEL EDGES NO PARALLEL EDGES Cube Cuboid Square-based pyramid SOME PERPENDICULAR EDGES Sphere Hemisphere Cone NO PERPENDICULAR EDGES

  22. PART 2PLANE SHAPES

  23. Polygons Two-dimensional shapes that have sides made from straight lines. • E.g. triangles squares hexagons

  24. Quadrilaterals • Any two-dimensional shapes with four straight sides. • E.g. square rhombus rectangle trapezium kite

  25. Rectangle • A four sided two-dimensional shape with two pairs of parallel sides that meet at right angles.

  26. Kite • A two-dimensional shape with two shorter sides of equal length and two longer sides of equal length.

  27. Rhombus • A two-dimensional four sided shape with opposite sides that are parallel and all the sides are the same length.

  28. Trapezium • A two-dimensional shape with four sides.One pair of sides is parallel with one side longer than the other.

  29. Pentagon • A two-dimensional shape with five straight sides and five angles.

  30. Hexagon • A two-dimensional shape with 6 straight sides and 6 angles.

  31. Octagon • A two-dimensional shape with 8 straight sides and 8 angles.

  32. What do we call a shape with:7 Sides?9 Sides?10 Sides?

  33. Circle • A round flat two-dimensional shape.

  34. Square • Two dimensional shape with 4 sides of the same length and 4 90° angles.

  35. Triangle • Two-dimensional shape with three straight sides and three angles. • Can you name 4 different kinds?

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