Identify 2D Shapes

Kindergarten · geometry · 23 practice problems · read aloud

🔊 Listen to this explanation

🔵 Let's Find Shapes! 🔺

We are learning to name flat shapes we see everywhere! This helps us describe the world around us, like a round clock or a square window.

How to Find and Name a Shape

  1. Look at the shape. Is it round? Does it have pointy corners?
  2. Count the sides. How many straight lines does it have?
  3. Count the corners. How many pointy parts are there?
  4. Say its name! Use what you counted to find the right name.

Let's Look at Some Shapes!

Example 1: The Circle 🔵

Look! This shape is round and smooth. It has zero straight sides and zero pointy corners. This is a circle!

Example 2: The Square ◼️

Let's count! It has 4 sides that are all the same length. It has 4 corners. This is a square!

Example 3: The Triangle 🔺

Let's count! It has 3 sides. It has 3 corners. This is a triangle!

Watch Out! 😯

Mistake: Calling a rectangle a square.

How to Avoid It: A square has all four sides the same. A rectangle has two long sides and two short sides. Check all the sides!

Fun Ways to Remember! 🎵

  • "A circle goes round and round, no corners can be found!"
  • "Tri- means three!" A tricycle has 3 wheels, and a triangle has 3 sides!
  • Go on a Shape Hunt around your room. How many circles, squares, and triangles can you find?

Time to Practice! ✏️

  • Draw your favorite shape and tell a grown-up its name.
  • Use play-dough or clay to make a circle, a square, and a triangle.
  • Look at a book and point to all the rectangles you can find on the pages.

Practice problems

6 of the 23, worked through step by step — try them before opening the answer.

1 Which shape has 3 sides?

  1. A) Square
  2. B) Circle
  3. C) Triangle
  4. D) Rectangle

Hint: Count the number of straight sides each shape has.

Show the answer

Answer: C) Triangle

  1. A square has 4 sides
  2. A circle has 0 straight sides
  3. A triangle has 3 sides
  4. A rectangle has 4 sides

The correct answer is C.

2 Which shape has 0 sides?

  1. A) Triangle
  2. B) Square
  3. C) Rectangle
  4. D) Circle

Hint: Think about which shape has no straight edges or corners.

Show the answer

Answer: D) Circle

  1. A triangle has 3 straight sides.
  2. A square has 4 straight sides.
  3. A circle has no straight sides - it is one continuous curved line.
  4. A rectangle has 4 straight sides. The shape with 0 sides is the circle,

so the correct answer is D.

3 Which shape has 3 corners?

  1. A) Square
  2. B) Rectangle
  3. C) Circle
  4. D) Triangle

Hint: Count the number of pointy parts on each shape

Show the answer

Answer: D) Triangle

  1. A square has 4 corners
  2. A rectangle has 4 corners
  3. A triangle has 3 corners
  4. A circle has 0 corners

The correct answer is D.

4 Which shape has no corners?

  1. A) Triangle
  2. B) Square
  3. C) Circle
  4. D) Rectangle

Hint: Think about which shape is completely round with no straight sides

Show the answer

Answer: C) Circle

  1. A triangle has 3 corners
  2. A square has 4 corners
  3. A circle has no corners because it is completely round
  4. A rectangle has 4 corners

The correct answer is C.

5 Which shape has 4 equal sides?

  1. A) Circle
  2. B) Rectangle
  3. C) Triangle
  4. D) Square

Hint: Think about shapes where all sides are the same length

Show the answer

Answer: D) Square

  1. A square has 4 sides that are all equal in length
  2. A rectangle has 4 sides but opposite sides are equal, not all sides
  3. A triangle has 3 sides, not 4 sides
  4. A circle has no straight sides

The correct answer is D.

6 Which shape has 3 straight sides?

  1. A) Square
  2. B) Triangle
  3. C) Circle
  4. D) Rectangle

Hint: Count the number of straight sides each shape has

Show the answer

Answer: B) Triangle

  1. A triangle has 3 straight sides
  2. A square has 4 straight sides
  3. A circle has 0 straight sides
  4. A rectangle has 4 straight sides

The correct answer is B.

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