Circumference & Area
Radius & Diameter
Scale Factor 1
Scale Factor 2
Corresponding Sides & Angles
Scaled Copy
100
A circle has a diameter of 12.5 inches. What is the circumference in terms of
pi \text{?}
What is
12.5pi \text{ inches?}
100
The diameter is 10 ft, so the radius is...
What is 5 inches?
100
What is the scale factor from the small fry to the large fry?
3
100
What is the scale factor from Triangle A to Triangle B
9
100
The side CB corresponds to the side ___
ZY
100
A triangle has the side lengths of 2, 4, 7. Of the following, which side lengths below would create a scaled copy...
1, 2, 3
1.5, 3, 5.25
2.5, 5, 8.5
What is 1.5, 3, 5.25?
200
A circle has a diameter of 25 inches, so the circumference is _____
What is 78.5 inches?
200
The radius is 25 ft, so the diameter is...
What is 50 feet?
200
Using the scale factor, what is the value of x?
20
200
0.8
200
The side AB corresponds to the side _______
XY
200
A triangle has the side lengths of 8, 9, 15. Of the following, which side lengths below would create a scaled copy...
16, 18, 25 16, 15, 30 16, 18, 30
What is 6, 18, 30?
300
A circle has a radius of 50 miles. What is the area of the circle?
What is 7850 mi2 ?
300
The circumference of the circle is 56.52 or
18pi \text{ in.}
so the radius is ______.
What is 9 inches?
300
What is the Scale Factor from triangle DEF to triangle D'E'F'?
1.5
300
riangle A to B has a scale factor of?
3
300
Which angle corresponds with ∠X?
∠E
300
A triangle has the side lengths of 4, 5, 6. Of the following, which side lengths below would create a scaled copy...
1, 1.25, 7.5 5, 6.25, 7.5 2, 2.5, 3.25
What is 5, 6.25, 7.5?
400
A circle has a diameter of 16, so the area is _
pi \text{?}
What is
65pi \text{?}
400
The circumference of a circle is
25pi \text{ in.}
so the radius is ______
What is 12.5 inches?
400
What is the Scale Factor from triangle ABC to triangle DEF?
1/2
400
the bigger triangle is the scale of smaller triangle. find the missing height
x = 12
400
Mr. Lloyd wants to build a doll house for his daughter that is proportional to their house. He measured the living room of his house and it is 12 ft by 16 feet. What will be the dimensions of the doll house living room if every foot of the actual house is equal to one half inch in the doll house?
6 inches by 8 inches
400
A triangle has the side lengths of 8, 12, 22. Of the following, which side lengths below would create a scaled copy...
4, 6, 11 6, 9, 16 12, 17, 30
What is 4, 6, 11?
500
A circle has a circumference of 6π, then the area is ___.
What is 28.26 square units?
500
A circle has a circumference of
256pi \text{ cm.}
so the diameter is _____.
What is 256 centimeters?
500
A flagpole and a model flag pole have a scale factor of 1 in.= 4 ft. If the model pole measures 12 inches, then the pole is ___.
48ft
500
The scale factor from triangle NPW to triangle
N`P`W`is ___
What is 1/4?
500
What are corresponding angles or side measures on the original compared to the scaled model are...?
the same (equivalent or equal)
500
Describe how you would determine if two shapes are similar if you only know the side lengths.
Check the ratios/proportions of corresponding side lengths.
If they the ratios/proportions for each pair are the same, then the shapes correspond.