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Semester A Review Part 2
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Determine whether triangle ABC to triangle JGH is a reflection, translation, rotation, or glide reflection.
Rotation; 180 degrees about (-0.5,0)
Are the images a reduction or enlargement? Identify the scale factor.
reduction; 1/2
Name a letter in the alphabet, other than H, that has rotational symmetry.
I, X, Z...
How many lines of symmetry does the image have?
2
Which letter has rotational symmetry? H, B, C, or K.
H
Label B is rotated 72 degrees. What is the image?
label j
What is the measure of a counterclockwise rotation about the spinner center that maps label A to label E?
216 degrees
Rectangle PQRS with vertices P(1, 2), Q(2, 5), R(8, 3), and S(7, 0) is reflected across the y-axis. What are the coordinates of its image?
P'(-1,2), Q'(-2,5), R'(-8,3), and S'(-7,0)
Triangle ABC with vertices A(-4, 2), B(4, 7), and C(5, 1) is reflected across the x-axis. What are the coordinates of A'B'C'?
A'(-4,-2, B'(4,-7), and C'(5,-1)
A translation with the given rule (x,y) -> (x+5,y+7) is translating which directions?
Right and up
Find the measures of angle M and angle N.
angle M = 76 degrees and angle N = 76 degrees
Find the value of x.
x = 7
What are the measures of angle T and angle U?
angle T = 72 degrees and angle U = 54 degrees
What property of congruence allows us to prove these two triangles congruent? What reason for proving triangles congruent can we use?
Reflexive Property of Congruence, side included in both triangles. SSS
What does the acronym CPCTC represent? When would we use it?
Corresponding Parts of Congruent Triangles are congruent. We would use it to prove sides or angles are congruent in congruent triangles.
What is the missing reason in the following proof.
CPCTC
Justify the last two reasons in the proof.
Reflexive Property of Congruence; AAS
Compare the triangles and determine whether they can be proven congruent, if possible, by SSS, SAS, ASA, AAS, or HL. Select your answer choice.
AAS
Compare the triangles and determine whether they can be proven congruent, if possible, by SSS, SAS, ASA, AAS, or HL. Select your answer choice.
HL
Compare the triangles and determine whether they can be proven congruent, if possible, by SSS, SAS, ASA, AAS, or HL. Select your answer choice.
ASA
Line y and line z are parallel. Find the value of x.
x = 15
Line l is parallel to line m. Find the value of x.
x = 12
Line l is parallel to line m. Find the value of x.
x = 12