10 Right-angled triangle 2-D ShapesRight-angled triangleIsosceles triangleScalene triangleNo equal sidesNo equal anglesOne of its angles is a right angle (90°)2 equal sides2 equal anglesEquilateral triangle3 equal sides3 equal angles of 60°
11 More 2-D Shapes Pentagon Hexagon 5 sides. have 6 sides Circle No sides No angles
12 More 2-D Shapes Square Trapezoid Square Rhombus Rectangle Rhombus 4 equal sides4 right anglesKite2 pairs of equalNo parallel sides.One pair of parallel sides of different lengthsRhombusRectangleRhombusRectangleParallelogram2 pairs of equal sides4 right angles2 pairs of equal sidesOpposite sides are parallelOpposite angles are equal4 equal sidesOpposite sides are parallelOpposite angles are equal
13 3-D Shapes3-D means the shape has 3 dimensions; length, width and depth.
14 3-D Shapes Sphere Cylinder Cone Long tube with 2 equal sized circular ends.Every point on the surface of the sphere is the same distance from the centre.A pyramid with a circular cross section. The point of the cone is directly above the centre of the circular base.
15 3-D Shapes Six faces which are all rectangles CornersEdgesSix faces which are all squaresFacesCornersEdges
22 2. A 2D shape with 6 sides is called a quadrilaterala pentagona hexagon
23 Let us review Click here to learn more about quadrilateral Back to Question 2
24 3. I have two pairs of equal sides. My opposite sides are parallel 3. I have two pairs of equal sides. My opposite sides are parallel. I have no right angles. What am I?RectangleParallelogramKite
25 Let us review Trapezoid Square Rhombus Rectangle Parallelogram 4 equal sides4 right anglesKite2 pairs of equalNo parallel sides.One pair of parallel sides of different lengthsRhombusRectangleParallelogram2 pairs of equal sides4 right angles2 pairs of equal sidesOpposite sides are parallelOpposite angles are equal4 equal sidesOpposite sides are parallelOpposite angles are equalBack to Question 3
26 4. Which of these shapes has no lines of symmetry? SquareScalene triangleRectangle
27 Let’s take another look. Click here to learn more about quadrilateralBack to Question 4
28 5. I have four equal sides and four right angles. What am I? SquareRectangleRhombus
29 Let us review Click here to learn more about quadrilateral Square RhombusRectangleBack to Question 5
30 6. The distance halfway across a circle is called CircumferenceRadiusDiameter
31 Let us reviewCircleNo sidesNo anglesBack to Question 6
32 7. A triangle with two equal angles is called Equilateral triangleIsosceles triangleScalene triangle
39 Polygon Land Ready? Click here. Now, let’s have some fun at polygon Land.You'll find hundreds of polygons to drag anywhere you want.Be a creative designer at polygon Land. These are examples of what you can do there. Be sure to read the instructions before you play.Ready? Click here.
40 Class ActivityFind more about 3-D shapes with your partner. Click on the shapes below and print them then follow the instructions on the sheet.
41 With a partner, make a chart like the one below and use it to find 3-D shapes around the classroom. Answer each question about the properties of the object and then see if you can correctly identify and name the object. Number of facesNumber of verticesNumber of edgesName of shape
42 HomeworkChoose a 3D shape and design a promotion poster for it. What makes this shape special? What are its properties? What is it used for/where is it seen (for example, packaging, buildings) and what makes it a good shape for this use?