Let’s go step by step to solve each part of the worksheet.
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Part a:
The shape is a four-sided figure with all sides equal and opposite angles equal — but no right angles shown. That matches the definition of a
rhombus.
→ Answer:
Rhombus
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Part b:
This shape has only one pair of parallel sides (top and bottom). The other two sides are not parallel. That’s the definition of a
trapezoid.
→ Answer:
Trapezoid
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Part c:
This looks like a square that’s been tilted. All sides are equal, and it has four right angles (even though it’s rotated). So it’s still a
square.
→ Answer:
Square
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Part d:
This is a rectangle — opposite sides are equal and parallel, and all angles are right angles. But since it doesn’t say “all sides equal,” we don’t call it a square. It’s a
rectangle.
→ Answer:
Rectangle
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Part e:
Opposite sides are parallel and equal in length, but no right angles. That’s a
parallelogram.
→ Answer:
Parallelogram
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Part f:
Only one pair of sides is parallel (the top and bottom). The left and right sides slant inward. Again, this is a
trapezoid.
→ Answer:
Trapezoid
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Part g: How can you tell the difference between a parallelogram and a trapezoid?
- A
parallelogram has
two pairs of parallel sides.
- A
trapezoid has
only one pair of parallel sides.
So, count how many pairs of opposite sides are parallel. If it’s two → parallelogram. If it’s one → trapezoid.
→ Answer:
A parallelogram has two pairs of parallel sides, while a trapezoid has only one pair of parallel sides.
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Part h: How can you tell the difference between a square and a rhombus?
- Both have
four equal sides.
- But a
square also has
four right angles (90° corners).
- A
rhombus does NOT need to have right angles — its angles can be different.
So, check the angles: if all are 90°, it’s a square. If not, it’s just a rhombus.
→ Answer:
A square has four right angles, but a rhombus does not necessarily have right angles — even though both have four equal sides.
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Final Answer:
a. Rhombus
b. Trapezoid
c. Square
d. Rectangle
e. Parallelogram
f. Trapezoid
g. A parallelogram has two pairs of parallel sides, while a trapezoid has only one pair of parallel sides.
h. A square has four right angles, but a rhombus does not necessarily have right angles — even though both have four equal sides.
Parent Tip: Review the logic above to help your child master the concept of quadrilateral worksheet third grade.
