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Cogito

Grade 2 Math · Chapter 8 · Lesson 3

Practice Worksheet

Shapes by Their Sides

Triangles, quadrilaterals, pentagons, and hexagons.

10 problems · about 12 minutes · 2.G.A.1

NameDate

Figures — use these to answer the problems

Count the sides. Turning it changes nothing.

Pentagon

Straight sides

5

Corners

5

Turn it0
Size40
Figure 1
This one has 4 sides, so it is a quadrilateral too.

Trapezoid

Straight sides

4

Corners

4

Turn it0
Figure 2

Warm-Up Review

From earlier lessons. Loosen up before the new work.

2 problems

  1. From “A.M. and P.M.”

    Is 3 o’clock in the afternoon a.m. or p.m.?

    • p.m.
    • a.m.

  2. From “Time to Five Minutes”

    The long hand is on the 5. How many minutes past?

    Answer

Warm Up

Straightforward practice. Get the method working first.

4 problems

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

    • A hexagon.
    • A pentagon.

  2. How many sides does a quadrilateral have?

    Answer

  3. How many sides does a pentagon have?

    Answer

  4. How many sides does a quadrilateral have?

    Answer

Build It Up

The same ideas with more to keep track of.

2 problems

  1. How many corners does a hexagon have?

    Answer

  2. How many sides does a triangle have?

    Answer

Stretch Yourself

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

2 problems

  1. Naming Shapes

    A shape has 5 straight sides. What is it?

    • A pentagon.
    • A hexagon.
    • A quadrilateral.

  2. The Family

    Is a square a quadrilateral?

    • Yes. It has 4 sides.
    • No. It has its own name.