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5 Minute Check - PowerPoint PPT Presentation

5 Minute Check. Complete on the back of your homework. 1. Suppose the base and height of a parallelogram is multiplied by 4. What effect would this have on the perimeter of the parallelogram?

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Complete on the back of your homework.

1. Suppose the base and height of aparallelogram is multiplied by 4. What effect would this have on the perimeterof the parallelogram?

2. Suppose the base and height of a parallelogram is multiplied by 4. What effect would this have on the areaof the parallelogram?

3. Suppose the base and height of an octagon is multiplied by 6. What effect would this have on the perimeter of the octagon?

4. Suppose the base and height of an octagon is multiplied by 6. What effect would this have on the areaof the octagon?

Complete on the back of your homework.

1. Suppose the base and height of aparallelogram is multiplied by 4. What effect would this have on the perimeterof the parallelogram?

Complete on the back of your homework.

1. Suppose the base and height of aparallelogram is multiplied by 4. What effect would this have on the perimeterof the parallelogram?

The perimeter is 4 times larger.

Complete on the back of your homework.

2. Suppose the base and height of a parallelogram is multiplied by 4. What effect would this have on the areaof the parallelogram?

Complete on the back of your homework.

2. Suppose the base and height of a parallelogram is multiplied by 4. What effect would this have on the areaof the parallelogram?

The area is 4², or 16, times larger.

Complete on the back of your homework.

3. Suppose the base and height of an octagon is multiplied by 6. What effect would this have on the perimeter of the octagon?

Complete on the back of your homework.

3. Suppose the base and height of an octagon is multiplied by 6. What effect would this have on the perimeter of the octagon?

The perimeter is 6 times larger.

Complete on the back of your homework.

4. Suppose the base and height of an octagon is multiplied by 6. What effect would this have on the areaof the octagon?

Complete on the back of your homework.

4. Suppose the base and height of an octagon is multiplied by 6. What effect would this have on the areaof the octagon?

The area is 6², or 36, times larger.

If you increase the sides of any shape by 2 times, you increase the perimeter by what?

If you increase the sides of any shape by 2 times, you increase the perimeter by what?

2 times

If you increase the sides of any shape by 2 times, you increase the area by what?

If you increase the sides of any shape by 2 times, you increase the perimeter by what?

2 times

If you increase the sides of any shape by 2 times, you increase the area by what?

2² times

Perimeter Area

2 times 2 times 4 times

Perimeter Area

2 times 2 times 4 times

If you increase the sides of any shape by 3 times, you increase the perimeter by what?

Perimeter Area

2 times 2 times 4 times

If you increase the sides of any shape by 3 times, you increase the perimeter by what?

3 times

If you increase the sides of any shape by 3 times, you increase the area by what?

Perimeter Area

2 times 2 times 4 times

If you increase the sides of any shape by 3 times, you increase the perimeter by what?

2 times

If you increase the sides of any shape by 3 times, you increase the area by what?

3² times

Perimeter Area

2 times 2 times 4 times

3 times 3 times 9 times

Perimeter Area

2 times 2 times 4 times

3 times 3 times 9 times

If you increase the sides of any shape by 4 times, you increase the perimeter by what?

Perimeter Area

2 times 2 times 4 times

3 times 3 times 9 times

If you increase the sides of any shape by 4 times, you increase the perimeter by what?

4 times

Perimeter Area

2 times 2 times 4 times

3 times 3 times 9 times

If you increase the sides of any shape by 4 times, you increase the perimeter by what?

4 times

If you increase the sides of any shape by 4times, you increase the area by what?

Perimeter Area

2 times 2 times 4 times

3 times 3 times 9 times

If you increase the sides of any shape by 4 times, you increase the perimeter by what?

4 times

If you increase the sides of any shape by 4times, you increase the area by what?

4² times

Perimeter Area

2 times 2 times 4 times

3 times 3 times 9 times

4 times 4 times 16 times

5 times ? ?

Perimeter Area

2 times 2 times 4 times

3 times 3 times 9 times

4 times 4 times 16 times

5 times 5 times 25 times

Perimeter Area

2 times 2 times 4 times

3 times 3 times 9 times

4 times 4 times 16 times

5 times 5 times 25 times

6 times ? ?

Perimeter Area

2 times 2 times 4 times

3 times 3 times 9 times

4 times 4 times 16 times

5 times 5 times 25 times

6 times 6 times 36 times

Chapter 9.5

Polygons on the Coordinate Plane

Objective: To draw polygons on the coordinate plane and use coordinates to find lengths.

At the end of this lesson you should be able to answer the following question.

How can coordinates help you find the areas of figures on the coordinate plane?

Graph the figure then classify it (tell what shape it is). Then find the area. A(-3,-4), B(-3,5), C(2,5), D(2,-4)

Graph the figure then classify it (tell what shape it is). Then find the area. A(-3,-4), B(-3,5), C(2,5), D(2,-4)

A = 5 x 9 = 45u²

Graph the figure then classify it (tell what shape it is). Then find the area. R(3,-2), S(7,-2), T(8,-6), V(1,-6)

Graph the figure then classify it (tell what shape it is). Then find the area. R(3,-2), S(7,-2), T(8,-6), V(1,-6)

A =

A =

A = 22u²

Graph the figure then classify it (tell what shape it is). Then find the area. X(-7,2),

Y(-7,6), Z(-4,2)

Graph the figure then classify it (tell what shape it is). Then find the area. X(-7,2),

Y(-7,6), Z(-4,2)

A =

A = 6u²

Graph the figure then classify it (tell what shape it is). Then find the area.

A(3,3), B(3,6), C(5,6), D(8,3)

Graph the figure then classify it (tell what shape it is). Then find the area.

A(3,3), B(3,6), C(5,6), D(8,3)

Area =

=

=

= 10.5u²

It is a trapezoid.

We can also use the coordinates of a shape to find the dimensions by finding the distance between two points.

What is the length of LK; L (1,4) K(1, 9)?

To find the distance between two ordered pairs, subtract the unique numbers and take the absolute value.

I4 – 9I

I-5I = 5

What is the length of ST; S (1,5) T(9, 5)?

What is the length of ST; S (1,5) T(9, 5)?

I1 – 9I

I-8I = 8

A rectangle has vertices of A(2,8), B (7,8), C (7,5) and D(2,5). Use the coordinates to find the length of each side. Then find the perimeter.

What is the length of AB?

A rectangle has vertices of A(2,8), B (7,8), C (7,5) and D(2,5). Use the coordinates to find the length of each side. Then find the perimeter.

What is the length of AB? I2-7I = I-5I = 5

What is the length of BC?

A rectangle has vertices of A(2,8), B (7,8), C (7,5) and D(2,5). Use the coordinates to find the length of each side. Then find the perimeter.

What is the length of AB? I2-7I = I-5I = 5

What is the length of BC? I8-5I = I3I = 3

What is the length of CD?

A rectangle has vertices of A(2,8), B (7,8), C (7,5) and D(2,5). Use the coordinates to find the length of each side. Then find the perimeter.

What is the length of AB? I2-7I = I-5I = 5

What is the length of BC? I8-5I = I3I = 3

What is the length of CD? I7-2I = I5I = 5

What is the length of DA?

A rectangle has vertices of A(2,8), B (7,8), C (7,5) and D(2,5). Use the coordinates to find the length of each side. Then find the perimeter.

What is the length of AB? I2-7I = I-5I = 5

What is the length of BC? I8-5I = I3I = 3

What is the length of CD? I7-2I = I5I = 5

What is the length of DA? I5-8I = I-3I = 3

What is the perimeter?

A rectangle has vertices of A(2,8), B (7,8), C (7,5) and D(2,5). Use the coordinates to find the length of each side. Then find the perimeter.

What is the length of AB? I2-7I = I-5I = 5

What is the length of BC? I8-5I = I3I = 3

What is the length of CD? I7-2I = I5I = 5

What is the length of DA? I5-8I = I-3I = 3

What is the perimeter? 5 + 3 + 5 + 3 = 16u

A rectangle has vertices of A(2,8), B (7,8), C (7,5) and D(2,5). Use the coordinates to find the length of each side. Then find the perimeter.

What is the length of AB? I2-7I = I-5I = 5

What is the length of BC? I8-5I = I3I = 3

What is the length of CD? I7-2I = I5I = 5

What is the length of DA? I5-8I = I-3I = 3

What is the area?

A rectangle has vertices of A(2,8), B (7,8), C (7,5) and D(2,5). Use the coordinates to find the length of each side. Then find the perimeter.

What is the length of AB? I2-7I = I-5I = 5

What is the length of BC? I8-5I = I3I = 3

What is the length of CD? I7-2I = I5I = 5

What is the length of DA? I5-8I = I-3I = 3

What is the area? 5 x 3 = 15u²

A rectangle ABCD has vertices of A(2,1), B (2,5), C (4,5) and D(4,1). Use the coordinates to find the length of each side. Then find the perimeter.

A rectangle ABCD has vertices of A(2,1), B (2,5), C (4,5) and D(4,1). Use the coordinates to find the length of each side. Thnfind the perimeter.

AB = I1- 5I = I-4I = 4

BC = I2 – 4I = I -2I = 2

CD = I5 – 1I = I4I = 4

DA = I4 – 2I = I2I = 2

The perimeter is 4 + 4 + 2 + 2 = 12u

What is the area?

A rectangle ABCD has vertices of A(2,1), B (2,5), C (4,5) and D(4,1). Use the coordinates to find the length of each side. Then find the perimeter and area.

AB = I1- 5I = I-4I = 4

BC = I2 – 4I = I -2I = 2

CD = I5 – 1I = I4I = 4

DA = I4 – 2I = I2I = 2

The perimeter is 4 + 4 + 2 + 2 = 12u

What is the area? 4 x 2 = 8u²

Each grid square on the zoo map has a length of 200 ft. Find the total distance, in feet, of the distance around the zoo.

Each grid square on the zoo map has a length of 200 ft. Find the total distance, in feet, of the distance around the zoo.

10+7+3+4+4+4+3+7= 42u

Since each unit is 200ft,

Then the total distance is

42 · 200 = 8400ft

Agenda Notes

Homework–

Homework Practice 9-5

Due Tuesday, Feb 11

Chapter 9 Test –Thursday, Feb 13