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10Transformations of Quadrilaterals Unit
tMa erial Anglegs, Parallelogram Sheet [A3], Scissors
CMath Vo abulary parallelogram: a quadrilateral with two pair of parallel sides and two pairs of equal sides
2 . Find all the parallelograms. 2. Have students circle all the parallelograms
and check answers with their classmates to
3 . Draw different parallelograms on the grid paper. see if they found them all.
Sample Answers The second and third figure in the first line
and the second figure in the second line do
10. Transformations of Quadrilaterals 85 not have parallel lines.
The first figure in the second line has only
one pair of parallel lines and is not a
parallelogram.
3. Have the students draw parallelograms on
a grid. Ask them to identify any squares or
rectangles among the figures they drew,and
discuss if a rectangle or square can also be
categorized as a parallelogram.
Refer to .
3. Check Point
Have the students remember that a
quadrilateral with one pair of parallel sides is a
trapezoid, and a quadrilateral with two pairs of
parallel sides is a parallelogram. The
parallelogram has opposite sides that are of
equal length, and opposite angles that are
equal. Students will explore these properties
in the following page.
Are rectangles and squares parallelograms, or not?
A quadrilateral with two pairs of parallel sides is a parallelogram. Rectangles and squares have two pairs of
parallel sides as shown in the figures below, and are parallelograms. Show the students that a parallelogram
with four right angles is a rectangle and a parallelogram with four right angles and four equal sides is a
square.
Parallelogram Rectangle Square
(Parallelogram) (Parallelogram)
4A Unit 10 141
10Transformations of Quadrilaterals Unit
tMa erial Anglegs, Parallelogram Sheet [A3], Scissors
CMath Vo abulary parallelogram: a quadrilateral with two pair of parallel sides and two pairs of equal sides
2 . Find all the parallelograms. 2. Have students circle all the parallelograms
and check answers with their classmates to
3 . Draw different parallelograms on the grid paper. see if they found them all.
Sample Answers The second and third figure in the first line
and the second figure in the second line do
10. Transformations of Quadrilaterals 85 not have parallel lines.
The first figure in the second line has only
one pair of parallel lines and is not a
parallelogram.
3. Have the students draw parallelograms on
a grid. Ask them to identify any squares or
rectangles among the figures they drew,and
discuss if a rectangle or square can also be
categorized as a parallelogram.
Refer to .
3. Check Point
Have the students remember that a
quadrilateral with one pair of parallel sides is a
trapezoid, and a quadrilateral with two pairs of
parallel sides is a parallelogram. The
parallelogram has opposite sides that are of
equal length, and opposite angles that are
equal. Students will explore these properties
in the following page.
Are rectangles and squares parallelograms, or not?
A quadrilateral with two pairs of parallel sides is a parallelogram. Rectangles and squares have two pairs of
parallel sides as shown in the figures below, and are parallelograms. Show the students that a parallelogram
with four right angles is a rectangle and a parallelogram with four right angles and four equal sides is a
square.
Parallelogram Rectangle Square
(Parallelogram) (Parallelogram)
4A Unit 10 141
