A copy of a figure where every length in the original figure is multiplied by the same number
What is a scaled copy?
The point in Copy 1 that corresponds to point K in the original
What is point A?
What is the scale factor from a square with side lengths 2 to a square with side lengths 8?
The scale factor is 4
The operation we use to create scaled copies
multiplication
When scaling a shape, what happens to the angles?
They stay the same
A point, segment, angle, or distance in an original figure that matches up with a point, segment, angle, or distance in a copy
What is a corresponding part?
The line segment in the original that corresponds with segment EF in Copy 1
What is segment OP?
The side lengths of the scaled copy if the original rectangle is 2 inches by 3 inches and the scale factor is 4.
What is 8 inches by 12 inches?
Draw a scaled copy of a square whose side lengths are 3, when the scale factor is 1.
The square should stay the same.
When a scaled copy gets bigger, is the scale factor less than 1, equal to 1, or greater than 1?
Greater than 1
The number we multiply all the lengths in the original figure by to create a scaled copy
What is the scale factor?
The point that corresponds to point R
What is point C?
The scale factor between the following two polygons
What is 3?
What is taking the reciprocal?
What is the reciprocal of 8?
1/8
A ____ tells how the measurements in a ____ drawing represent the actual measurements of the object.
What is a scale?
The distance that corresponds to the distance between points B and D
What is the distance between points Q and S?
The scale factor between the two polygons (they are scaled copies)
What is 1/4?
A rectangle is 24 by 36 inches. What are the dimensions of a scaled copy with a scale factor of 1/8?
The rectangle will be 3 by 4 inches.
Multiplying by 1/6 is the same as dividing by...
6
Dividing 1 by a number gives the _____________ of this number. You can also find this by switching the numerator and denominator of a fraction.
What is a reciprocal?
The corresponding angle to angle ADC
What is angle PSR?
The scale factor if the original triangle has side lengths 3, 3, and 3 and the scaled copy has side lengths 1, 1, and 1.
What is 1/3?
See Slideshow
186
The sides of a square are 2 inches. The square is scaled by a factor of 5. What is the area of the scaled copy?
the area of the scaled copy is 100 inches squared