7.1-7.2Transformations and Symmetry
Flashcard
•
Mathematics
•
9th - 10th Grade
•
Practice Problem
•
Hard
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1.
FLASHCARD QUESTION
Front
What is a translation in geometry?
Back
A translation is a type of transformation that moves every point of a shape the same distance in a specified direction.
2.
FLASHCARD QUESTION
Front
What is the rule for translating a point (x, y) by (a, b)?
Back
The rule is (x, y) → (x + a, y + b).
3.
FLASHCARD QUESTION
Front
If a triangle is translated by the rule (x + 2, y - 1), what happens to the coordinates of its vertices?
Back
Each vertex's x-coordinate increases by 2 and the y-coordinate decreases by 1.
4.
FLASHCARD QUESTION
Front
What does the notation (x, y) → (y, -x) represent?
Back
This notation represents a rotation transformation that swaps the x and y coordinates and changes the sign of the new x-coordinate.
5.
FLASHCARD QUESTION
Front
How do you determine the number of lines of symmetry in a shape?
Back
Count the number of ways you can divide the shape into two identical halves by a line.
6.
FLASHCARD QUESTION
Front
What is a line of symmetry?
Back
A line of symmetry is a line that divides a shape into two mirror-image halves.
7.
FLASHCARD QUESTION
Front
What is the difference between reflection and rotation?
Back
Reflection flips a shape over a line, while rotation turns a shape around a fixed point.
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