Let’s go through each shape one by one and figure out what kind of quadrilateral it is.
We’re classifying these shapes using these terms:
- Square
- Rectangle
- Rhombus
- Parallelogram
- Trapezoid
- Scalene (irregular) — meaning no special name, just a 4-sided shape with no equal sides or parallel sides
Remember:
- A
square has 4 equal sides and 4 right angles.
- A
rectangle has opposite sides equal and 4 right angles.
- A
rhombus has 4 equal sides, but angles are not necessarily right angles.
- A
parallelogram has two pairs of parallel sides (opposite sides are equal and parallel).
- A
trapezoid has exactly one pair of parallel sides.
- A
scalene (irregular) quadrilateral has no parallel sides and no equal sides.
Now let’s look at each numbered shape:
---
Shape 1: Looks like a slanted four-sided shape. Opposite sides are parallel and equal → that’s a
parallelogram.
Shape 2: All sides look equal, and all corners are right angles → that’s a
square.
Shape 3: Opposite sides equal, all corners right angles, but not all sides same length → that’s a
rectangle.
Shape 4: One side is longer, no sides look parallel, no symmetry → this is
scalene (irregular).
Shape 5: Slanted, opposite sides parallel and equal → again, a
parallelogram.
Shape 6: Only the top and bottom sides look parallel → that’s a
trapezoid.
Shape 7: Same as Shape 1 and 5 — slanted, opposite sides parallel →
parallelogram.
Shape 8: Same as Shape 3 — rectangle (right angles, opposite sides equal).
Shape 9: Same as Shape 1, 5, 7 — slanted, opposite sides parallel →
parallelogram.
Wait — let’s double-check Shape 2: Is it really a square? In some worksheets, if it looks like a square but isn’t labeled, we assume based on appearance. Since all sides appear equal and angles are 90°, yes —
square.
Also, note: Sometimes “rhombus” is used for diamond-shaped figures with equal sides but not right angles. But in this worksheet, none of the shapes clearly show 4 equal sides *without* right angles except maybe Shape 1, 5, 7, 9 — but those are more accurately called parallelograms unless specified otherwise. Actually, a rhombus IS a type of parallelogram, but since the worksheet lists them separately, we should only call something a rhombus if it’s clearly a diamond with equal sides and non-right angles.
Looking again — none of the shapes here have 4 equal sides AND non-right angles. So probably no rhombus in this set.
Shape 4: Let’s confirm — it’s an irregular quadrilateral. No sides parallel, no equal sides → scalene (irregular).
Shape 6: Definitely only one pair of parallel sides → trapezoid.
So final classification:
1. Parallelogram
2. Square
3. Rectangle
4. Scalene (irregular)
5. Parallelogram
6. Trapezoid
7. Parallelogram
8. Rectangle
9. Parallelogram
Final Answer:
1. Parallelogram
2. Square
3. Rectangle
4. Scalene (irregular)
5. Parallelogram
6. Trapezoid
7. Parallelogram
8. Rectangle
9. Parallelogram
Parent Tip: Review the logic above to help your child master the concept of properties of quadrilateral worksheet.