10.01 Name 2D shapes

Lesson

Practice

Lesson

Are you ready?

Do you remember the names of 2D shapes?

What is the name of the shape in the picture below?

Triangle
A
Rectangle
B

Learn

We can group 2D shapes into categories using their features. A shape with $4$4 straight edges is a quadrilateral.

This video looks at the names of some 2D shapes and what features they have.

Apply

question 1

What is the name of the quadrilateral in the picture below?

Rectangle
A
$Square$
B

question 2

How many edges does each shape have?

Remember!

To help work out the name of a shape, think about properties like:

how many sides it has
what sides are the same length
does it have right angles
are the sides straight or curved
how many vertices, or corners, it has

Outcomes

3.G.A.1

Understand that shapes in different categories may share attributes and that the shared attributes can define a larger category. Recognize rhombuses, rectangles, and squares as examples of quadrilaterals and recognize examples of quadrilaterals that do not belong to any of these subcategories.