3. When you see
this icon, it is
time to take
notes in your
notebook!
Reminder
4. Before we start our lesson,
let’s sing the
Quadrilateral Song
(to the tune of Head, Shoulders, Knees and Toes)
Warm-Up
5. Squares, rectangles, trapezoids,
and rhombus,
Squares, rectangles, trapezoids,
and rhombus,
Shapes with 4 sides and angles,
Squares, rectangles, trapezoids,
and rhombus.
48. A rhombus has:
⃞4 equal sides
⃞no right angles
⃞2 pairs of
parallel sides
49. A rhombus has:
⃞4 equal sides
⃞no right angles
⃞2 pairs of
parallel sides
50. A rhombus has:
⃞4 equal sides
⃞no right angles
⃞2 pairs of
parallel sides
51. Time to work in trios!
Let’s help Lisa and Hans
find the shapes they need
for a school project.
Group Activity
52. Hans and Lisa need to study a set of
figures and their properties to present in
front of the class.
54. The following table shows the properties
of the shapes they are looking for.
Properties
Figures
F G H I J
Has four sides. ✔ ✔ ✔ ✔ ✔
Has four right angles. ✔ ✔
Sides are all equal. ✔ ✔
Opposite sides are equal. ✔ ✔ ✔ ✔
Only one pair of parallel sides. ✔
Two pairs of parallel sides. ✔ ✔ ✔ ✔
55. Properties
Figures
F G H I J
Has four sides. ✔ ✔ ✔ ✔ ✔
Has four right angles. ✔ ✔
Sides are all equal. ✔ ✔
Opposite sides are equal. ✔ ✔ ✔ ✔
Only one pair of parallel sides. ✔
Two pairs of parallel sides. ✔ ✔ ✔ ✔
56. Here’s what to do:
1. Study the table carefully.
2. Identify the figure with the given
properties.
3. Write the letter inside the figure.
4. Name the figure.
58. trapezoid
Hans and Lisa need to study a set of
figures and their properties to present in
front of the class.
G H
square
rectangle
rhombus
F
parallelogram
I J
64. Now, try working on your own.
1. Read each situation.
2. Draw the shape of the
object that is described.
3. Name the shape.
Independent Work
65. Emma is flying a toy kite
at the park.
The kite has four equal
sides, but none of its
angles measures 90°.
What is the shape
of the kite?
66. Ben is using small tiles
to create a mosaic.
Each tile has four sides,
where the opposite
sides are equal,
and each angle is a
right angle.
What is the shape of
each tile?
67. Across her classroom,
Anna can see a door
with four equal sides
and equal angles.
What is the shape of
the door?
68. The mayor wants to
build a public
playground in a shape
with only one pair of
parallel sides.
What shape will the
playground be?
69. A construction worker is
laying bricks on a wall.
The wall is a quadrilateral
with opposite sides that
are equal and parallel,
but no right angles.
What is the shape
of the wall?
71. Emma is flying a toy kite
at the park.
The kite has four equal
sides, but none of its
angles measures 90°.
What shape did
she find?
rhombus
72. Ben is using small tiles
to create a mosaic.
Each tile has four sides,
where the opposite
sides are equal,
and each angle is a
right angle.
What is the shape of
each tile?
rectangle
73. Across her classroom,
Anna can see a door
with four equal sides
and equal angles.
What is the shape of
the door?
square
74. The mayor wants to
build a public
playground in a shape
with only one pair of
parallel sides.
What shape will the
playground be?
trapezoid
75. A construction worker is
laying bricks on a wall.
The wall is a quadrilateral
with opposite sides that
are equal and parallel,
but no right angles.
What is the shape
of the wall?
parallelogram
76. Great job on working
independently!
Now, let's think about
these questions.
77. What quadrilateral do you
see more often?
Why do you think it is more
common than others?
Application
81. Has four sides.
Has four right angles.
All sides are all equal.
Opposite sides are equal.
One pair of parallel sides.
Two pairs of parallel sides.
Here are the properties:
82. square
Has four sides.
Has four right angles.
All sides are all equal.
Opposite sides are equal.
One pair of parallel sides.
Two pairs of parallel sides.
Here are the properties:
83. rectangle
Has four sides.
Has four right angles.
All sides are all equal.
Opposite sides are equal.
One pair of parallel sides.
Two pairs of parallel sides.
Here are the properties:
84. rhombus
Has four sides.
Has four right angles.
All sides are all equal.
Opposite sides are equal.
One pair of parallel sides.
Two pairs of parallel sides.
Here are the properties:
85. parallelogra
m
Has four sides.
Has four right angles.
All sides are all equal.
Opposite sides are equal.
One pair of parallel sides.
Two pairs of parallel sides.
Here are the properties:
86. trapezoid
Has four sides.
Has four right angles.
All sides are all equal.
Opposite sides are equal.
One pair of parallel sides.
Two pairs of parallel sides.
Here are the properties:
87. Identifying quadrilaterals helps
us understand and interact with
the world, making it easier
to build, design, and appreciate
everyday objects.
