# Geometry Fall 2017 Lesson 048-039 MP2 Test 3

```Brooklyn Technical High School
Exam 3 MP2
Geometry Term I
Name ____________________________
Instructor: Mr. Rodriguez Period ____________________________
1) Find the number of sides of a polygon if the sum of the degree measures of its interior angles is 900.
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2) Find the sum of the degree measures of the interior angles of a polygon that has 12 sides.
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3) A regular polygon has 10 sides. Find the measure of one exterior angle.
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Directions: For multiple choice
questions place only the number or
letter of the choice in the answer box.
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12)
Directions: Write legibly!
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Directions: Place you final
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21) Lines l and k intersect. What single transformation is equivalent to the following sequence of transformations?
rl rk ABC 
A) Reflection
B) Dilation
C) Translation
D) Rotation
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E) Glide Reflection
22)
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23) If ST is reflected across the line y  x , what are the coordinates of the image of point T
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Directions: Place parentheses
around coordinates!
B’
C’
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25)
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26) Which point represents the image of point A after reflecting through line l .
Directions: Pick the point
closest to the image of A after
reflection in line l .
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27) Polygon ABCD has been rotated counterclockwise around point E.
A) Draw an angle of rotation.
B) Use your protractor to find the measure of the angle of rotation
to the nearest multiple of 5.
Directions: When measuring an angle with a
protractor make sure that the sides of the angle
are long enough to intersect the markings on the
protractor! The answer in the answer box
should be a multiple of 5. Do not put an answer
in the answer box such as 17 or 29 or 42 which
are not multiples of 5.
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28) ABC has been rotated about a point to produce the image, namely A' B' C' .
Via construction, find the point that represents the center of rotation. Label the point P.
Directions: If you’re going to construct
a perpendicular bisector of a line
segment, make sure the line segment is
visible to the grader as well as the
markings
demonstrating
the
construction of the perpendicular
bisector. Leave all construction marks
in all construction questions.
29) Draw a vector that defines the translation from ABC to A' B' C' .
Please do not give a rule for the translation such as Ta , b .
Do what the question is asking you to do which is to
Draw a vector that defines the translation from ABC to A' B'C' .
30) Construct the line of reflection across which the image below was reflected.
Directions: If you’re going to construct
a perpendicular bisector of a line
segment, make sure the line segment is
visible to the grader as well as the
markings
demonstrating
the
construction of the perpendicular
bisector.
31) What is the image of point A after rotating it 120o about point C?
Directions: Pick the point
closest to the image of A after
rotating about point C .
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35) In the figure at the right, quadrilateral ABCD has been reflected over line m and its image reflected over line
n. If AA '  3x and the distance between the parallel lines is represented by x  5 , find the distance between the
parallel lines.
Directions: The final answer to
this question is a number, a
value, a numeral. Please do not
write an algebraic expression
such as x  5 in the answer
box.
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