This Grade 4 worksheet focuses on the rhombus, a quadrilateral with four congruent sides that looks like a tilted square. Students correct sentences, complete fill-in attributes about diagonals and parallel sides, and explain how a rhombus differs from a square. Exercises emphasize Grade 4 vocabulary - bisect, congruent, right angle - while showing why every square is a rhombus but not every rhombus is a square.
Style:
Classifying Quadrilaterals
Part A: Fix the Sentence
Each sentence has an error. Rewrite it correctly on the line.
1. Fix the sentence:
A rhombus have four congruent sides in Grade 4 geometry.
Rewrite: A rhombus has four congruent sides in Grade 4 geometry.
2. Fix the sentence:
Every rhombus are a square with four right angles.
Rewrite: Not every rhombus is a square with four right angles.
3. Fix the sentence:
The diagonals of a rhombus bisects each other at right angles.
Rewrite: The diagonals of a rhombus bisect each other at right angles.
Part B: Fill in the Blank
Write the missing word or number on each line.
1. A Grade 4 rhombus has four congruent sides.
2. A rhombus looks like a tilted square because its angles can lean.
3. A square is a special rhombus that also has four right angles.
4. The diagonals of a rhombus bisect each other at the center.
Part C: Short Answer
Answer each question in one or two complete sentences.
1. Explain how a rhombus is similar to and different from a square in Grade 4 classification.
A rhombus and a square both have four congruent sides. They are different because a square also has four right angles, while a rhombus may have angles that are not 90 degrees.
2. Describe two attributes you would check to confirm a shape is a rhombus in Grade 4 geometry.
First I would check that all four sides are congruent. Then I would check that opposite sides are parallel, since a rhombus is also a parallelogram with equal sides.
Classifying Quadrilaterals
★ Part A: Fix the Sentence
Each sentence has an error. Rewrite it correctly on the line.
1) Fix the sentence:
A rhombus have four congruent sides in Grade 4 geometry.
Rewrite: A rhombus has four congruent sides in Grade 4 geometry.
2) Fix the sentence:
Every rhombus are a square with four right angles.
Rewrite: Not every rhombus is a square with four right angles.
3) Fix the sentence:
The diagonals of a rhombus bisects each other at right angles.
Rewrite: The diagonals of a rhombus bisect each other at right angles.
★ Part B: Fill in the Blank
Write the missing word or number on each line.
1) A Grade 4 rhombus has four congruent sides.
2) A rhombus looks like a tilted square because its angles can lean.
3) A square is a special rhombus that also has four right angles.
4) The diagonals of a rhombus bisect each other at the center.
★ Part C: Short Answer
Answer each question in one or two complete sentences.
1) Explain how a rhombus is similar to and different from a square in Grade 4 classification.
A rhombus and a square both have four congruent sides. They are different because a square also has four right angles, while a rhombus may have angles that are not 90 degrees.
2) Describe two attributes you would check to confirm a shape is a rhombus in Grade 4 geometry.
First I would check that all four sides are congruent. Then I would check that opposite sides are parallel, since a rhombus is also a parallelogram with equal sides.
Ready to Practice?
Complete each section carefully.
9 Questions
15-20 minutes
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