[A] Title Same and different Remember Remember text Two-dimensional (2D) shapes are flat and have no depth. Properties include sides and vertices.
some 2D and 3D shapes
You will need:
PL
Vocabulary
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Three-dimensional (3D) shapes are solids with length, height and depth. Properties include faces, vertices and edges. 3D shapes have 2D shape faces.
2D shape, 3D shape, side, face, edge, vertex, vertices, triangle, square, rectangle,
quadrilateral, pentagon, hexagon, octagon, decagon, circle, sphere, cube, cuboid, cylinder, cone, square-based pyramid, triangular-based pyramid, triangular-based prism, hexagonal-based prism, octahedron, icosahedron, dodecahedron
Look at each pair of shapes.
Hint: Compare faces, vertices and edges.
SA M
What is the same and what is different about the shapes in each pair? Use the grid to record your ideas. Shapes
What is the same?
Both have 6 faces and 12 edges.
20
What is different? Cube has square faces. Cuboid has rectangular faces, but some faces could be squares.
Original material © Cambridge University Press 2016
Unit 1B Geometry and problem solving CPM Framework 3Gs3, 3Gs4, 3Gs6, 3Pt9; CPM Teacher’s Resource 7.2