Lesson 4.1-4.3 Quick Flashcard
Flashcard
•
Mathematics
•
9th - 10th Grade
•
Practice Problem
•
Hard
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1.
FLASHCARD QUESTION
Front
What are the coordinates of a point after a 180° rotation about the origin?
Back
To find the coordinates after a 180° rotation about the origin, negate both the x and y coordinates. For example, the point (x, y) becomes (-x, -y).
2.
FLASHCARD QUESTION
Front
What is a reflection in geometry?
Back
A reflection is a transformation that flips a figure over a line, creating a mirror image. The line is called the line of reflection.
3.
FLASHCARD QUESTION
Front
How do you reflect a point across the x-axis?
Back
To reflect a point (x, y) across the x-axis, the new coordinates will be (x, -y).
4.
FLASHCARD QUESTION
Front
What is line symmetry?
Back
Line symmetry occurs when a figure can be divided into two identical halves that are mirror images of each other along a line.
5.
FLASHCARD QUESTION
Front
How many lines of symmetry does a square have?
Back
A square has 4 lines of symmetry.
6.
FLASHCARD QUESTION
Front
What is a vector translation in geometry?
Back
A vector translation moves every point of a figure the same distance in a specified direction, represented by a vector.
7.
FLASHCARD QUESTION
Front
What is the result of reflecting the point (3, 5) in the y-axis?
Back
The coordinates after reflection in the y-axis will be (-3, 5).
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