Classifying Quadrilaterals - Set 1
1. Let's practice classifying quadrilaterals.
Quadrilaterals can be classified according to the number of parallel sides, the number of
congruent sides, and the number of right angles.
A trapezoid is a quadrilateral with exactly one pair of parallel opposite sides.
2. A parallelogram is a quadrilateral with both pairs of opposite sides parallel.
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Classifying Quadrilaterals - Set 1
3. A rhombus is a parallelogram with 4 congruent sides.
4. A rectangle is a parallelogram with 4 right angles.
5. A square is a rectangle with 4 congruent sides.
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Classifying Quadrilaterals - Set 1
6. When classifying a quadrilateral, first count the number of parallel sides. Then count the
number of right angles and the number of congruent sides.
The name that best describes a quadrilateral is the one that
is the most specific.
Let's classify a quadrilateral using the name that best describes it.
First, count the number of parallel sides. This quadrilateral has one pair of parallel sides.
Next, count the number of right angles. This quadrilateral has 2 right angles.
Finally, count the number of congruent sides. This quadrilateral has no congruent sides.
Since the quadrilateral has one pair of parallel sides, it is a trapezoid.
7. Let's classify another quadrilateral using the name that best describes it.
First, count the number of parallel sides. This quadrilateral has 2 pairs of parallel sides.
Next, count the number of right angles. This quadrilateral has no right angles.
Finally, count the number of congruent sides. This quadrilateral has 4 congruent sides.
Since the quadrilateral is a parallelogram with 4 congruent sides, it is a rhombus.
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Classifying Quadrilaterals - Set 1
Now, try to work through the next problems step by step.
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Classifying Quadrilaterals - Set 1
1. Look at this problem.
Classify the quadrilateral using the name that best describes it.
How many parallel sides does this quadrilateral have?
A 1 pair
B 2 pairs
2. Classify the quadrilateral using the name that best describes it.
This quadrilateral has 2 pairs of parallel sides.
How many right angles does this quadrilateral have?
A 4
B 2
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Classifying Quadrilaterals - Set 1
3. Classify the quadrilateral using the name that best describes it.
This quadrilateral has 2 pairs of parallel sides and 4 right angles.
How many congruent sides does this quadrilateral have?
A 4
B 2 pairs
4. Classify the quadrilateral using the name that best describes it.
This quadrilateral has 2 pairs of parallel sides, 4 right angles, and 2 pairs of congruent sides.
Which name best describes this quadrilateral?
A rectangle
B square
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Classifying Quadrilaterals - Set 1
Now, work these practice problems on your own.
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Classifying Quadrilaterals - Set 1
1. Classify the quadrilateral using the name that best describes it.
A B C D trapezoid
rectangle
parallelogram
rhombus
2. Classify the quadrilateral using the name that best describes it.
A B C D rhombus
parallelogram
square
trapezoid
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Classifying Quadrilaterals - Set 1
3. Classify the quadrilateral using the name that best describes it.
A B C D rhombus
parallelogram
rectangle
trapezoid
4. Classify the quadrilateral using the name that best describes it.
A B C D square
rectangle
parallelogram
rhombus
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Classifying Quadrilaterals - Set 1
5. Classify the quadrilateral using the name that best describes it.
A B C D parallelogram
square
rhombus
rectangle
6. Classify the quadrilateral using the name that best describes it.
A B C D parallelogram
rectangle
rhombus
square
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