Skip to lesson

Choose “Save as PDF” in the print dialog to keep a copy.

Cogito

Grade 1 Math · Chapter 9 · Lesson 2

Practice Worksheet

Naming Flat Shapes

Learn the names of the flat shapes you see everywhere.

10 problems · about 12 minutes · 1.G.A.1

NameDate

Figures — use these to answer the problems

Turn the hexagon. Count its sides at every angle.

Hexagon

Straight sides

6

Corners

6

Turn it0
Size40
Figure 1
A trapezoid also has 4 sides, but they are not all the same.

Trapezoid

Straight sides

4

Corners

4

Turn it0
Figure 2

Warm-Up Review

From earlier lessons. Loosen up before the new work.

4 problems

  1. From “What Makes a Shape a Shape?”

    How many corners does a triangle have?

    Answer

  2. From “When the Ones Make a Ten”

    16 + 17 = ?

    Answer

  3. From “Adding Two-Digit Numbers”

    21 + 14 = ?

    Answer

  4. From “Word Problems Within 40”

    Whole 35, one part 15. Other part?

    Answer

Warm Up

Straightforward practice. Get the method working first.

3 problems

  1. A shape has 6 straight sides. What is it?

    • A hexagon.
    • A square.

  2. How many sides does a trapezoid have?

    Answer

  3. How many sides does a hexagon have?

    Answer

Build It Up

The same ideas with more to keep track of.

1 problem

  1. How many sides does a circle have?

    Answer

Stretch Yourself

Mixed problems. Work out what kind of question it is before you start.

2 problems

  1. How many corners does a square have?

    Answer

  2. Shapes at School

    A window has 4 sides and 4 square corners. What is it?

    • A rectangle.
    • A triangle.
    • A circle.