GCSE Mathematics Targeting Grade C Shape and Space Unit 1 Solids Can you… If not you need •Name polygons Top: Names of shapes •Identify congruent and similar shapes Practice 1: Congruent and similar shapes •Draw nets of 3-D solids Practice 2: Draw accurate nets Try a test TAIL 1 •Understand plans and elevations Practice 3: Plans and elevations •Name 3D solids Practise 4: Name 3D solids Try a test TAIL 2 TOP Name these Polygons and show all equal sides and angles Remember a regular polygon has all its sides equal length and angles equal size Use lines to show equal lengths and arrows to show parallel sides Lesson Practice 1: 1. 5cm 4cm 9cm 6cm 7.5cm (a) Are these triangles similar? (b) Give reasons for your answer 6cm 2. Which of the following shapes are congruent? B A C F E D Lesson G Practice 2: Name these solids and draw their nets 1. 2. 3cm 2cm 4cm 3cm 5cm 4cm 3. 4. 5cm 2cm 3cm 3cm Lesson 2cm 2cm TAIL 1 Are you ready for the answers ? 1. A regular hexagon is made from a rectangular piece of metal. This is done by removing the four congruent triangles shown shaded in the diagram. Diagram NOT accurately drawn 2 The total area of the four shaded triangles is 600 cm2. Find the area of the hexagon. (3) 2. 3x600=1800cm Here is a net of a cube. A Diagram NOT accurately drawn A (a) (b) 2 cm A (b) The net is folded to make the cube. Two other vertices meet at A. Mark each of them with the letter A. (2) The length of each edge of the cube is 2 cm. Work out the volume of the cube. (3) Work out the surface area of the cube. (3) 2x2x2=8cm3 2 (2x2)x6=24cm Next 3. 1 2 3 4 5 A Are you ready for the answers ? B The diagrams show some solid shapes and their nets. C Match the solid shapes to their nets. D E Lesson Practice 3: Remember: The plan is the view from above The front elevation is the view from the front The side elevation is the view from the side (right) Next Practice 3: Here are the plan and front elevation of a prism. The front elevation shows the cross section of the prism. Are you ready for the answers ? Plan (b) Draw a 3-D sketch of the prism. (2) (Total 5 marks) Front elevation (3) (a) On the grid below, draw a side elevation of the prism. Lesson Practice 4: Write down the mathematical name for each of these three different 3-D shapes. Lesson 1. TAIL 2 Here is the plan and side elevation of a prism. The side elevation shows the cross section of the prism. Are you ready for the answers ? On the grid below, draw the front elevation of the prism. (Total 3 marks) Next Are you ready for the answers ? TAIL 2 2. Write down the mathematical name for each of these three different 3-D shapes. (Total 3 marks) Sphere Lesson Cylinder Triangular based pyramid