Prperties of 3-D Shapes - KATE

www.numeracysoftware.com Properties of 3-D Shapes Cuboid Cube Prism Triangular Prism Hexagonal Prism Cylinder Cone Sphere Square-Based Pyramid Tetrahedron Octahedron Dodecahedron Icosahedron www.numeracysoftware.com

Cuboid Key Feature Six faces which are all rectangles. Faces 6 Corners 8 Edges 12 Planes of Symmetry? If the cuboid has no square faces then it has ... If two opposite faces are square then it has ... three.

five. Is a Cuboid a Prism? Yes, because it has a rectangular cross-section throughout its length. www.numeracysoftware.com Cube Key Feature Six faces which are all squares. Faces 6 Corners 8

Edges 12 Planes of Symmetry? Nine Is a Cube a Prism? Yes, because it has a square cross-section throughout its length. www.numeracysoftware.com Prism Key Feature The shape of its cross-section is the same throughout its length. Faces, Corners, Edges? It depends what sort of prism it is. Planes of Symmetry?

It depends what sort of prism it is. Examples of prisms include triangular prism, hexagonal prism, cuboid, cube and cylinder. www.numeracysoftware.com Triangular Prism Key Feature A prism with a triangular cross-section. Faces 5 Corners 6 Edges

9 Planes of Symmetry? If the triangle is equilateral then it has ... If the triangle is isosceles then it has ... If the triangle is scalene then it has ... four. two. one. www.numeracysoftware.com Hexagonal Prism Key Feature A prism with a hexagonal cross-section. Faces

8 Corners 12 Edges 18 Planes of Symmetry? If its a regular hexagon then it has seven. www.numeracysoftware.com Cylinder Key Feature A prism with a circular cross-section.

Faces, Corners and Edges The normal definitions of faces, corners and edges are not appropriate for a cylinder. Planes of Symmetry? Infinite www.numeracysoftware.com Cone Key Feature The point of the cone is directly above the centre of the circular base. Faces, Corners and Edges The normal definitions of faces, corners and edges are not appropriate for a cone. Planes of Symmetry?

Infinite www.numeracysoftware.com Sphere Key Feature Every point on the surface of the sphere is the same distance from the centre. Faces, Edges and Corners The normal definitions of faces, corners and edges are not appropriate for a sphere Planes of Symmetry? Infinite www.numeracysoftware.com Square-Based Pyramid

Key Feature A shape with a square base and triangular sides that meet at a point. Planes of Symmetry? Four Faces 5 Corners 5 Edges 8 www.numeracysoftware.com

Tetrahedron Key Feature Four faces which are all equilateral triangles. Faces 4 Corners 4 Edges 6 Planes of Symmetry? Six

www.numeracysoftware.com Octahedron Key Feature Eight faces which are all equilateral triangles. Faces 8 Corners 6 Edges 12

Planes of Symmetry? Nine www.numeracysoftware.com Dodecahedron Key Feature Twelve faces which are all regular pentagons. Faces 12 Corners 20 Edges

30 Planes of Symmetry? Fifteen www.numeracysoftware.com Icosahedron Key Feature Twenty faces which are all equilateral triangles. Faces 20 Corners 12

Edges 30 Planes of Symmetry? Fifteen www.numeracysoftware.com END OF PRESENTATION

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