Increase or Decrease?
Scale Factor
Circles
Area and Circumference
Angles
100
Would the scale factor of 2 increase or decrease the size of a figure?
INCREASE
100
The scale factor from triangle DEF to triangle D`E`F`is ...
1.5 cm
100
The distance from the center of a circle to the outside, also half of the diameter
radius
100
What is the cicumference of a circle with a diamter of 10 feet?
31.4 feet
100
Complimentary angles add up to how many degrees?
90 degrees
200
Would the scale factor of 0.25 increase or decrease the size of a figure?
DECREASE
200
The scale factor from triangle NQB to triangle N`Q`B` is...
1.25 cm
200
What is the radius if the diameter is 12 inches?
6 inches
200
What is the circumference of a circle with a radius of 13 cm?
81.64 cm
200
What is the name of the relationship of two angles that add up to 180 degrees?
Supplementary Angles
300
Would the scale factor of 2/3 increase or decrease the size of a figure?
DECREASE
300
he value of the unknown side length x is ...
x = 7
300
The distance from one side of the circle to the other through the center, also double the radius
diameter
300
What is the area of a circle with a radius of 3 miles?
9π or 928.26 miles squared
300
Angles 1 and 2 are vertical angles. If angle 2 is 101 degrees, how many degress is angle 1?
101 degrees
400
Would the scale factor of 6/5 increase or decrease the size of a figure?
INCREASE
400
The scale factor from triangle NPW to triangle N`P`W`is ...
0.25 cm
400
What is the diameter of a circle with a radius of 24 mm?
48 mm
400
What is the circumference of a circle with a radius of 45 meters?
282.6 meters
400
If angle X = 115 degrees, and angle X and Y form a straight line, find the measure of angle Y.
Angle Y = 65 degrees
500
Would the scale factor of 100% increase or decrease the size of a figure?
NEITHER!
500
The value of the unknown side length ? is ...
? = 20
500
What is the radius in inches if the diameter is 0.325 feet?
1.95 inches
500
What is the area of a circle with a diameter of 25 inches?
156.25π or 490.625 inches squared
500
Angle X, Y, and Z form a straight line. Angle Y = 90 degrees. Angle X is 1/3 of the measure of angle Y. What are the measures of angle X and angle Z?
Angle X = 30 degrees and Angle Z = 60 degrees.