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CHAPTER 7
1
Classifying
Quadrilaterals
Goal Identify and sort quadrilaterals.
A furniture store is creating a catalogue of its tables.
Tables with these quadrilateral tops will be in
the catalogue.
quadrilateral
A closed shape
with 4 straight
sides
parallelogram
A quadrilateral
with opposite
sides that are
equal and
parallel
equal
The same length
? How are the tables organized?
All the tables share the attribute of having
4 straight sides.
A. What other attributes do the purple tables share?
B. A square table is included with the purple tables.
Is that a mistake? Explain your answer.
Equal lines are marked
with the same number
of ticks.
parallel
Always the same
distance apart
C. What other attributes do the blue tables share?
D. What other attributes do the yellow tables share?
E. Do the red tables share any attributes?
Explain your answer.
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Parallel lines are drawn
in the same colour.
NEL
07-NEM-Gr4-Chap07
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10:03 AM
Page 183
F. Where does each shape belong
in the Venn diagram?
a) a rectangle
b) a rhombus
c) a square
Sorting Quadrilaterals
parallelograms
G. What shape name would you give to each group of
table tops?
a) purple
b) blue
c) yellow
all sides equal
rectangle
A parallelogram
with 4 square
corners
Reflecting
1. In the word quadrilateral, what does quad mean?
square corner
2. Use examples to explain why a quadrilateral can
rhombus
A parallelogram
with 4 equal
sides
have more than 1 shape name.
Checking
3. List all the possible shape names for each table top.
a)
b)
c)
Practising
square
A parallelogram
with 4 equal
sides and 4
square corners
4. Draw your own table tops to show each shape.
a) a trapezoid
b) a quadrilateral that is not a parallelogram
or a trapezoid
5. A table top has 4 sides, but only 2 square corners.
What shape name can you use to describe it?
trapezoid
A quadrilateral
with only 1 pair
of parallel sides
6. A table top has 2 pairs of parallel sides.
What shape is it?
NEL
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