Name the four transformations and identify which are considered rigid transformations.
Rigid: Translation, Rotation, Reflection
Non-Rigid: Dilation
Are the triangles similar? If so, by what postulate? If not, explain using scale factors/ratios.
AA
What are the ratios for sine, cosine, and tangent?
Sin(x) = O/H
Cos(x) = A/H
Tan(x) = O/A
A cylinder is sliced vertically along a dotted line, as shown. Which two-dimensional shape is created from this cross section?
Rectangle
If the slope of a line is -3, what is the slope of a line that is parallel and a slope of a line that is perpendicular to the given line? Be sure to clearly label your answer.
Parallel: -3
Perpendicular: 1/3
Determine the center and radius of the following circle:
Center: (-2, 5)
Radius: 7
Two events A and B are independent.
P(A) = 0.3
P(A and B) = 0.24
What is P(B)?
P(B) = 0.8
Mr. Hvizdos completes a transformation on a triangle. The resulting triangle is similar, but it is NOT congruent to the original triangle. What transformation did Mr. Hvizdos perform?
Dilation
Are the triangles similar? If so, by what postulate? If not, explain using scale factors/ratios.
SAS
What is sin(Z)?
12/20 = 3/5
Find the volume of the solid.
167.6
What is the slope of a line perpendicular to the graph of the following line?
-4/5
Which equation could be used to find the area of the shaded region?
A
A student flips a fair coin twice and is surprised the result is heads both times. Are the two events independent or dependent? Explain.
Independent
Triangle B is rotated 90° counterclockwise about the origin. Which triangle shows the new location?
A
The triangles below are similar. Find the value of x.
12
Solve for x.
12.5
Find the volume of the solid.
15
Point A is located at (3, -2). The midpoint of line segment AB is point C (7, 1). What are the coordinates of point B?
(11, 4)
Find the measures of ∠A and ∠D.
∠A = 70
∠D = 95
Find P(Car or 11th grade).
145/297
If B(3,1) and B'(-4,5), what is the translation rule?
(x-7, y+4)
Find the volume of the shaded region.
1951.3
Line k has a slope of -5. Line j is perpendicular to line k and passes through point (5, 9). Create the equation for line j.
y - 9 = 1/5(x - 5)
y = 1/5x + 8
Find the measure of arc AL and ∠ACL.
arc AL = 40
∠ACL = 20
Find P(Car | 11th grade).
15/82
Reflect the triangle A(1,3), B(5,2), C(4,-1) about the y- axis.
A'(-1,3), B'(-5,2), C'(-4,-1)
Square JKLM is shown. Which three dimensional figure could result from rotating square JKLM 360° clockwise about the segment JM.
Cylinder
Square ABCD has vertices at A(1,2) and B(3,-3). What is the slope of BC?
-5/2
Circle A can be mapped onto circle B by a translation _______________ and a dilation about the center of circle B by a scale factor of _______________.
Translation: (x+11, y-4)
Dilation: k = 2
Consider two events: Event A is that the student is a 9th grader and event B is that the student walked to school. Are the events independent? Support your claim with mathematical evidence.
P(Walk) = 125/297 = 0.421, P(Walk | 9th) = 30/105 = 0.286, Dependent
OR
P(9th) = 105/297 = 0.354, P(9th | Walk) = 30/125 = 0.24, Dependent