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Exploring 2D Shapes

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Exploring 2D Shapes

Help plan a shape-themed playground! Study the shapes, then solve each challenge. A corner is also called a vertex.

Shape spotting

1.A round stepping stone has no straight sides and no corners. Which 2D shape is it?

Circle
Triangle
Rectangle

2.A sign is shaped like a triangle. How many straight sides and how many corners does it have?

3.A rectangular garden bed has four straight sides. What is special about the corners of a rectangle?

Sort and compare

4.Match each shape to its description: triangle, circle, rectangle.

Triangle
Circle
Rectangle

4 straight sides and 4 right-angle corners
3 straight sides
No straight sides or corners

5.Tick every shape that has four sides: circle, triangle, rectangle, square.

Circle
Triangle
Rectangle
Square

6.True or false? Every square is a rectangle because it has four right-angle corners.

TrueFalse

7.A builder groups shapes by the number of corners. Which group would contain a circle, and how many corners are in that group?

Design challenge

8.Draw one triangle, one rectangle and one circle to design a playground sign. Label each shape. Make sure your triangle has 3 sides and your rectangle has 4 right angles.

9.Explain one way a triangle and a rectangle are alike, and one way they are different.

10.Mere says, “A shape with four sides must be a rectangle.” Is Mere always right? Explain using another four-sided shape.