What is the primary characteristic of a reflection in geometry?
Reflections: Understanding Mirror Lines and Transformation Rules

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Mathematics
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6th - 8th Grade
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Hard
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7 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
It rotates a shape around a point.
It enlarges a shape by a scale factor.
It flips a shape over a line.
It translates a shape in a straight line.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is NOT a type of mirror line used in reflections?
Vertical mirror line
Diagonal mirror line
Horizontal mirror line
Curved mirror line
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
When performing a reflection, what is the first step to ensure symmetry?
Translate the shape along the mirror line.
Rotate the shape around the mirror line.
Move each point to the mirror line and continue the same distance on the other side.
Scale the shape by a factor of two.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How is a vertical mirror line typically named in algebraic terms?
y = a constant
x = a constant
y = x
y = -x
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the algebraic expression for a diagonal mirror line where the y-coordinate equals the x-coordinate?
y = 0
x = 0
y = -x
y = x
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In a reflection exercise, if a point is 3 units away from the mirror line, how far should it be placed on the other side?
1 unit
4 units
3 units
2 units
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the correct name for a mirror line that cuts through the y-axis at -1?
y = 1
x = 1
y = -1
x = -1
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