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What is the name of Ms. Ho's dog?
Penny
What are the details for a rotation?
Center of rotation, direction, and amount of degrees.
What does slope describe about a line?
It's steepness.
A dilation makes what types of shapes?
Scaled copies
How do you prove any two shapes to be similar?
Describe a sequence of transformations (translations, rotations, reflections, dilations) that takes one shape to the other (including all the details!)
Which math teacher grew up in Brooklyn?
Joga
Find the new coordinates of (3,-2) after you reflect the point over the x-axis.
(-3,-2)
How do you calculate slope?
Vertical distance / Horizontal distance
Find the new coordinates of (3,-2) if you dilate the point with a scale factor of 4 with the origin as the center?
What is (12,-8)?
Triangle A and B are both right triangles. Triangle A has a 25 degree angle and Triangle B has a 65 degree angle. Are these two triangles similar? How do you know?
Yes they are similar because they both have a 90 degree angle. Then if you use the fact that all the angles add up to 180 degrees in a triangle, you can subtract 180-90-25 to find the last angle in Triangle A to be 65. Therefore, we now know Triangle A and B definitely have two angles in common, and therefore we know they will be similar.
Who is the youngest math teacher on the 8th grade team?
Ms. Cook
Describe a sequence of transformation(s) that takes shape A to shape B.
(Teacher shows image blue & green)
Translate shape A 1 unit up and 3 units to the right.
Which line has a slope of 2?
(Teacher shows image of blue, yellow, black)
The yellow line
True or False: Dilations will always make a shape bigger or smaller.
False
Triangle C and D are both isosceles triangles. Will they always, sometimes, or never be similar?
Sometimes
Which teacher had the most majors in college?
Ms. Cook
Which transformation does not always result in a congruent figure?
A dilation
What is the slope of this line?
(Teacher shows image of line with 2 known points)
6/3 or 2
True or False: A scale factor written as a fraction will result in a smaller shape
False
Triangle ABC is similar to Triangle DEF. Find the side length of DF (it is labeled x).
DF = 14
Describe a sequence of transformations that takes the green triangle to the purple triangle.
(Teacher shows image green & purple)
(Teacher checks sequences)
What is the rule for this line? HINT: Find the slope.
(Teacher show the graph for the blue line)
Describe the following dilation.
(Teacher show image of blue & green rectangle)
1. If two shapes are congruent, then they are similar.
2. If two shapes are similar, then they are congruent.
1. Always
2. Sometimes