Dividing Fractions
What do you call the top and bottom of a fraction?
Numerator and Denominator
How much do complementary angles equal when added?
90 degrees
Shapes are ________ when they have the exact same shape, size, angles, and area.
congruent
True or False: When dilating any polygon, the angle measures change.
True
Slope formula?
Vertical/Horizontal or Rise/Run
Define the word reciprocal
1 divided by the number example 2 becomes ½
How much do supplementary angles equal when added?
180 degrees
Shapes are __________ when they have the same shape and angles, but can have different (proportionally) side lengths
similar
True or False: When dilating polygons, we multiply the side lengths by the scale factor.
True
What is the slope for a vertical line (Rise) of 5 and a horizontal line (Run) of 7?
5/7
What is the difference between multiplying and dividing fractions?
When you are dividing fractions you must remember you are multiplying the fractions by a reciprocal.
what is the complement of an angle that is 72 degrees?
18 degrees
The ________ of a dilation is the starting point from which we measure distances in a dilation
center
True or False: If the scale factor is a whole number, the shape will get smaller and if the scale factor is a fraction, the shape will get bigger
Find the slope. The coordinates are (0, 1) and (1, 2)
1
What else do you call a reciprocal?
Multiplicative Inverse
What is the supplement of an angle that is 50 degrees?
130 degrees
To create a scaled copy, we multiply all the lengths in the original figure by the same number. This number is called the _____ ______ (2 words)
scale factor
If the segment AB is 5 cm long and we use a scale factor of 7, what is the new measurement of the segment?
35cm
Find the slope. The coordinates are (1, 3) and (9, 10)
7/8
What is the vinculum?
The line that separates the numerator and the denominator
What is the complement and supplement of an angle that is 86 degrees?
The complement is 4 degrees, the supplement is 94 degrees.
The _____ of a line is a number we can calculate using any two points on the line. To find the______, divide the vertical distance between the points by the horizontal distance.
slope
If the original segment is 15 in long and the new one is 5 in long, what was the scale factor?
1/3
Find the slope. The coordinates are (2, -3) and (-6, 4)
-7/8