5 Minute Check
Find the area. Complete in your notebook.
1.
9in
6in
2.
13.5ft
2.5ft
3.
1.2cm 4.
9.8cm
12 m
3
7
4
3 m
9
5 Minute Check
Find the area. Complete in your notebook.
1.
9in
6in
5 Minute Check
Find the area. Complete in your notebook.
1.
9in
9 in · 6in = 54 in²
6in
5 Minute Check
Find the area. Complete in your notebook.
2.
13.5ft
2.5ft
5 Minute Check
Find the area. Complete in your notebook.
2.
13.5 ft · 2.5 ft = 33.75 ft²
13.5ft
2.5ft
5 Minute Check
Find the area. Complete in your notebook.
3.
9.8cm
1.2cm 4.
5 Minute Check
Find the area. Complete in your notebook.
1.2 cm · 9.8 cm = 11.76 cm²
3.
9.8cm
1.2cm 4.
5 Minute Check
Find the area. Complete in your notebook.
4.
12 m
3
7
4
3 m
9
5 Minute Check
Find the area. Complete in your notebook.
4
3 m · 1237m =
9
4.
1237 m
4
3 m
9
Flashcards
Tuesday, Feb 4
Chapter 9.1
Area of Parallelograms
Area of Parallelograms
Objective: To find the area of parallelograms.
Area of Parallelograms
At the end of this lesson you should be able
to answer the following question.
How are parallelograms related to rectangles?
Area of Parallelograms
A polygon is a closed figure formed by 3 or
more straight lines.
Area of Parallelograms
A polygon is a closed figure formed by 3 or
more straight lines.
A quadrilateral is a polygon with 4 sides.
Area of Parallelograms
A parallelogram is a quadrilateral with
opposite sides parallel and equal in length.
Area of Parallelograms
A rhombus is a parallelogram with all equal
sides.
Area of Parallelograms
The area A of a parallelogram is the base b
multiplied by the height h.
A = bh
The base and height must be perpendicular to each
other. Connected by a 90˚ angle.
h
b
Area of Parallelograms
A formula is an equation that shows a
relationship among certain quantities.
The formula to find the area of a
parallelogram is A = bh
Area of Parallelograms
What is the area of the parallelogram?
Area of Parallelograms
What is the area of the parallelogram?
A =bh
b=?
Area of Parallelograms
What is the area of the parallelogram?
A =bh
b=6
h=?
Area of Parallelograms
What is the area of the parallelogram?
A =bh
b=6
h=8
What is the area?
Area of Parallelograms
What is the area of the parallelogram?
A =bh
b=6
h=8
What is the area? A = 6 · 8 = 48 units² or 48u²
Area of Parallelograms
What is the area of the parallelogram?
Do this on your own.
Area of Parallelograms
What is the area of the parallelogram?
b = 20cm
h = 11cm
A = 11cm · 20cm = 220cm²
Area of Parallelograms
What is the area of the parallelogram?
Do this on your own.
Area of Parallelograms
What is the area of the parallelogram?
b = 4m
h = 16m
A = 4m · 16m = 64m²
Area of Parallelograms
What is the area of the parallelogram?
Do this on your own.
Area of Parallelograms
What is the area of the parallelogram?
b = 2.6m
h = 5.1m
A = 2.6m · 5.1m = 13.26m²
Area of Parallelograms
What is the area of the parallelogram?
Do this on your own.
Area of Parallelograms
What is the area of the parallelogram?
1
94
b=
ft
h = 18 ft
A = 166.5ft²
Area of Parallelograms
Romilla is painting a replica of the national flag of Trinidad
and Tobago for a research project. Find the area of the
black stripe.
Do this on your own.
Area of Parallelograms
Romilla is painting a replica of the national flag of Trinidad
and Tobago for a research project. Find the area of the
black stripe.
b = 634 in and h = 12in
A = 6 · 12
3
4
A = 81in²
Area of Parallelograms
Find the area of the shaded region.
Do this on your own.
Area of Parallelograms
Find the area of the shaded region.
Area of the rectangle
25 · 11 = 275ft²
Area of the parallelogram
4 · 12 = 48ft²
The area of the shaded region is the area of
the rectangle minus the area of the
parallelogram, 275ft² - 48ft² = 227ft²
Area of Parallelograms
Find the area of the shaded region.
Do this on your own.
Area of Parallelograms
Find the area of the shaded region.
15 · 8 – 6 · 6 = 84cm²
Area of Parallelograms
How are parallelograms related to rectangles?
Area of Parallelograms
Agenda Notes
Homework–
Homework Practice 9-1
Due Wednesday, Feb 5
Mid-Chapter 9 Quiz –Friday, Feb 7