This Grade 4 worksheet introduces trapezoids as quadrilaterals with exactly one pair of parallel sides. Students fix sentence errors, fill in attributes like bases and legs, and explain why an isosceles trapezoid is special. The set builds vocabulary - vertex, parallel, congruent, isosceles - while reinforcing Grade 4 expectations to recognize trapezoids and contrast them with parallelograms in clear short answers.
Style:
Classifying Quadrilaterals
Part A: Fix the Sentence
Each sentence has an error. Rewrite it correctly on the line.
1. Fix the sentence:
A trapezoid has two pairs of parallel sides in Grade 4 geometry.
Rewrite: A trapezoid has one pair of parallel sides in Grade 4 geometry.
2. Fix the sentence:
An isosceles trapezoid have two congruent non-parallel sides.
Rewrite: An isosceles trapezoid has two congruent non-parallel sides.
3. Fix the sentence:
Each trapezoid have four vertices and one pair of parallel sides.
Rewrite: Each trapezoid has four vertices and one pair of parallel sides.
Part B: Fill in the Blank
Write the missing word or number on each line.
1. A Grade 4 trapezoid has exactly one pair of parallel sides.
2. Every quadrilateral, including a trapezoid, has four vertices.
3. An isosceles trapezoid has two congruent non-parallel legs.
4. The two parallel sides of a trapezoid are called bases.
Part C: Short Answer
Answer each question in one or two complete sentences.
1. Explain why a square is not a trapezoid in the Grade 4 classification used at school.
A square has two pairs of parallel sides, but a trapezoid in Grade 4 has only one pair. Because a square has more, it is classified as a parallelogram, not a trapezoid.
2. Describe one attribute that makes an isosceles trapezoid special compared with other Grade 4 trapezoids.
An isosceles trapezoid has two congruent legs, so its non-parallel sides are equal in length. This gives it one line of symmetry, unlike most trapezoids.
Classifying Quadrilaterals
★ Part A: Fix the Sentence
Each sentence has an error. Rewrite it correctly on the line.
1) Fix the sentence:
A trapezoid has two pairs of parallel sides in Grade 4 geometry.
Rewrite: A trapezoid has one pair of parallel sides in Grade 4 geometry.
2) Fix the sentence:
An isosceles trapezoid have two congruent non-parallel sides.
Rewrite: An isosceles trapezoid has two congruent non-parallel sides.
3) Fix the sentence:
Each trapezoid have four vertices and one pair of parallel sides.
Rewrite: Each trapezoid has four vertices and one pair of parallel sides.
★ Part B: Fill in the Blank
Write the missing word or number on each line.
1) A Grade 4 trapezoid has exactly one pair of parallel sides.
2) Every quadrilateral, including a trapezoid, has four vertices.
3) An isosceles trapezoid has two congruent non-parallel legs.
4) The two parallel sides of a trapezoid are called bases.
★ Part C: Short Answer
Answer each question in one or two complete sentences.
1) Explain why a square is not a trapezoid in the Grade 4 classification used at school.
A square has two pairs of parallel sides, but a trapezoid in Grade 4 has only one pair. Because a square has more, it is classified as a parallelogram, not a trapezoid.
2) Describe one attribute that makes an isosceles trapezoid special compared with other Grade 4 trapezoids.
An isosceles trapezoid has two congruent legs, so its non-parallel sides are equal in length. This gives it one line of symmetry, unlike most trapezoids.
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9 Questions
15-20 minutes
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