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Area and Perimeter By Christine Berg Edited by V T Hamilton.

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Presentation transcript:

9 8 7 6 5 4 3 2 1 1 2 3 4 5 6 7 8 9 10

What symbol is at the point (1, 3)?_____________________

When this second triangle disappears I can tell that… What is the measure of IJH if the measure of IHJ = 45°?_______ When this second triangle disappears I can tell that… 90 90 + 45 + ? = 180 I know that…

? What is the area of this triangle? ? ? ? ? ? ?

What is the area of this? ? ? ? ? ? ? ?

What is the area of this?

Size of the Fridge 3 ft 3 ft 3 ft

? Jim wants to build a rectangular fence that is 20 feet wide and 30 feet long. To build the fence does he need to find the area or perimeter? How much fence does he need? ? ? ?

is 22 feet, what is the length of the rug?_____________ The width of a rectangular rug is 8 feet. If the perimeter is 22 feet, what is the length of the rug?_____________ ? ?

Draw a rectangle that has an area of 24 square units and a perimeter of 20 units?

The width of a rectangular rug is 5 feet. If the perimeter is 26 feet, what is the area of the rug?________________ 5+5= ? 5 5 ? To find the are of this rug I first have to find…because the perimeter…After that all I have to…

The width of a rectangular rug is 7 feet. If the perimeter is 20 feet, what is the area of the rug?________________ ?+?= ? ? ? ? To find the are of this rug I first have to find…because the perimeter…After that all I have to…

Each side of square A was multiplied by 3 to make square B. How does the area of square B compare to the area of square A?

Plot and label the following points: A: (1,1) B (4, 1) C (5, 4) D (2, 4) Plot the same figure’s reflection. Connect the points A: (1,-1) B (4, -1) C (5, -4) D (2, -4)

How many faces? How many edges? How many vertices?

Why is this the best answer?

How do you get the circumference of the moons orbit around the earth. Space shuttle speed 20,000 mph. You divide 240,000 by 20,000 Then you divide that by 24 because there is 24 hours in a day The circumference of the moons orbit around the the earth is 1,507,200 This is the radius of the moons orbit. It is 240,000 miles. The moon needs to be 24,000 miles away from where you take off. So in 12 hours, you will land on the moon. Then you divide it by 28 days because that is how long it takes for the moon to get around the earth. Which is 53,828 Which is 2,000 mph How do you get the circumference of the moons orbit around the earth. X diameter That’s 3.14 x the diameter (240,000 x 2= 480,000)

Mr. C.’s example for circumference

Mr. C’s Examples Use red construction paper to draw a circle that has a radius of 4 inches. Use green construction paper to draw a circle that has a diameter of 4 inches.

What is the area of these triangles and parallelograms? The height of the triangle is 3. 3 The width of the base is 5 2 1 1 2 3 4 5 x = 15 Because every triangle is HALF of a rectangle you divide the area by 2. 15 2= 7.5