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🔺 3rd grade math · Shapes & Space

Squares, rectangles, rhombuses

A rhombus has 4 equal sides. A rectangle has 4 square corners. A trapezoid has exactly one pair of parallel sides.

Worked example

This shape has 4 sides. Which name is the best one for it? (Pick the name that tells the most.)
Answer: trapezoid
Look at the sides and corners. This one has exactly 1 pair of parallel sides, so it is a trapezoid.

For grown-ups: Categories of quadrilaterals (rhombus, rectangle, square). Below: three problems to try with the worked answers, and a free printable sheet. Children can practise the same skill as a game, with no sign-up and no ads.

  • CCSS 3.G.A.1
What this practises, for teachers

Practices categories of quadrilaterals (rhombus, rectangle, square) (3.G.A.1). A printable sheet with its answer key, worked answers on the page, no accounts.

▶ Practise it

For your class

🖨️ Printable sheet and key

On the board with this skill:

Try three

  1. This shape has 4 sides. Which name is the best one for it? (Pick the name that tells the most.)
    Show the answer and how
    Answer: square
    Look at the sides and corners. This one has 4 equal sides and 4 square corners, so it is a square.
  2. This shape has 4 sides. Which name is the best one for it? (Pick the name that tells the most.)
    Show the answer and how
    Answer: square
    Look at the sides and corners. This one has 4 equal sides and 4 square corners, so it is a square.
  3. This shape has 4 sides. Which name is the best one for it? (Pick the name that tells the most.)
    Show the answer and how
    Answer: rhombus
    Look at the sides and corners. This one has 4 equal sides, but no square corners, so it is a rhombus.

Before and after

Learn first: Count sides and corners (2nd)

Comes next: Lines, rays and angles (4th)

Name: ____________________Date: ____________Score: ____ / 12

Squares, rectangles, rhombuses (3rd grade)

  1. This shape has 4 sides. Which name is the best one for it? (Pick the name that tells the most.)
  2. This shape has 4 sides. Which name is the best one for it? (Pick the name that tells the most.)
  3. This shape has 4 sides. Which name is the best one for it? (Pick the name that tells the most.)
  4. This shape has 4 sides. Which name is the best one for it? (Pick the name that tells the most.)
  5. This shape has 4 sides. Which name is the best one for it? (Pick the name that tells the most.)
  6. This shape has 4 sides. Which name is the best one for it? (Pick the name that tells the most.)
  7. This shape has 4 sides. Which name is the best one for it? (Pick the name that tells the most.)
  8. This shape has 4 sides. Which name is the best one for it? (Pick the name that tells the most.)
  9. This shape has 4 sides. Which name is the best one for it? (Pick the name that tells the most.)
  10. This shape has 4 sides. Which name is the best one for it? (Pick the name that tells the most.)
  11. This shape has 4 sides. Which name is the best one for it? (Pick the name that tells the most.)
  12. This shape has 4 sides. Which name is the best one for it? (Pick the name that tells the most.)

Answer key

  1. rectangle
  2. rectangle
  3. square
  4. square
  5. square
  6. trapezoid
  7. rectangle
  8. trapezoid
  9. rhombus
  10. square
  11. rhombus
  12. quadrilateral

More 3rd grade skills: all 3rd grade math skills, or every grade at math skills.