Similar
How is similar and congruent different?
Similar is same angles different sized shape.
What would the scale factor be that takes (3,5) to (9,15)
3
What is the scale factor?
The number we multiply the side length by.
What is slope?
vertical /Horizontal
How old is Ms. Promes
25
Triangle ABC is Similar to triangle XYZ.
AB:8 BC: a CA:6.
XY:2.5 YZ:16 ZX:19.2
What is the scale factor?
Scale Factor 3.2
How does the scale factor tell us whether the dilation would make the shape bigger or smaller
greater than 1 would make it bigger. Less than 1 would make it smaller.
What are the three forms of rigid transformation
Rotation, translation, reflection.
What is the slope of the line going through the points (5,4) and (9,6)
1/2
What's my Dogs name?
Duke
Which pair of triangles are similar?
A. Triangles 1 and 2 each have a 35 degree angle
B. Triangle 3 and 4 are both isosceles. They each have a 40 degree angles
C. Triangle 5 has a 30 degree angle and a 90 degree angle. Triangle has a 30 degree angle and a 70 degree angle
D. Triangle 7 has a 50 degree angle and a 25 degree angle. Triangle B has a 50 degree angle and a 105 degree angle.
D
Which two are true about the center of dilation?
A. It's the only point that doesn't move
B. It is the farthest point from the center
C. It is the point we dilate around
D. It is the number we multiply by.
A & C
Three angles in a triangle have to add up to what?
180
What is a possible point on the line with the equation y/x=3
A. (9,6)
B. (1,3)
C. (3,6)
B
How many siblings does Ms. Promes have
4
What makes shapes similar?
Same angles different size.
Which three are true?
A Dilation doesn't increase the length of the line segments.
B. Dilations take perpendicular lines to perpendicular lines.
C. Dilations of an angle are congruent to the original angle.
D. Dilations increase the measure of angles.
E. Dilations of a triangle are similar to the original triangle.
B, C, & E
What is the same as multiplying by a fraction?
Dividing by the reciprocal
What is the equation of a line that goes though the points (x,y) and (3,5) with a slope of 2.
(y-5)/(x-3) = 2
What subject did Ms. Promes originally want to teach?
Family & Consume Science
What do I have to check to see if shapes are similar?
Ensure sides increase by the same scale factor and check angle measure
What happens to angles when you Dilate?
They stay the same
Is the quadrilateral with side lengths 2,5,8,9 similar to the quadrilateral with side lengths 5,11,20, 22.5?
No Scale factor is 2.5 and 5 X 2.5 is not 11
Find the slope and the equation of the line that goes through the points (1,2) (6,8) and (x,y).
slope of :6/5 the equation (y-8)/(x-6) = 6/5
or (y-2)/(x-1)=6/5
What two colleges did Ms. Promes attend?
Indian Hills Community College & Buena Vista University