Questions: Select all the correct answers.
Which sequences of transformations confirm the congruence of shape II and shape I? a reflection of shape I across the x-axis followed by a 90° clockwise rotation about the origin a reflection of shape I across the x-axis followed by a 90° counterclockwise rotation about the origin a reflection of shape I across the y-axis followed by a 90° counterclockwise rotation about the origin a reflection of shape I across the y-axis followed by a 90° clockwise rotation about the origin a reflection of shape I across the x-axis followed by a 180° rotation about the origin
Transcript text: Select all the correct answers.
Which sequences of transformations confirm the congruence of shape II and shape I?
a reflection of shape I across the $x$-axis followed by a $90^{\circ}$ clockwise rotation about the origin
a reflection of shape I across the $x$-axis followed by a $90^{\circ}$ counterclockwise rotation about the origin
a reflection of shape I across the $y$-axis followed by a $90^{\circ}$ counterclockwise rotation about the origin
a reflection of shape I across the $y$-axis followed by a $90^{\circ}$ clockwise rotation about the origin
a reflection of shape I across the $x$-axis followed by a $180^{\circ}$ rotation about the origin
Solution
Solution Steps
Step 1: Analyze the transformations
Let's analyze each option:
Option 1: Reflecting shape I across the x-axis changes its coordinates from (x, y) to (x, -y). A 90° clockwise rotation about the origin changes the coordinates from (x, -y) to (-y, -x). This maps shape I to the same quadrant as shape II.
Option 2: Reflecting shape I across the x-axis changes its coordinates from (x, y) to (x, -y). A 90° counterclockwise rotation about the origin changes the coordinates from (x, -y) to (y, x). This maps shape I to a different quadrant than shape II.
Option 3: Reflecting shape I across the y-axis changes its coordinates from (x, y) to (-x, y). A 90° counterclockwise rotation about the origin changes the coordinates from (-x, y) to (-y, -x). This maps shape I to the same quadrant as shape II.
Option 4: Reflecting shape I across the y-axis changes its coordinates from (x, y) to (-x, y). A 90° clockwise rotation about the origin changes the coordinates from (-x, y) to (y, -x). This maps shape I to a different quadrant than shape II.
Option 5: Reflecting shape I across the x-axis changes its coordinates from (x, y) to (x, -y). A 180° rotation about the origin changes the coordinates from (x, -y) to (-x, y). This maps shape I to a different quadrant than shape II.
Step 2: Identify the correct transformations
By comparing the positions and orientations of shape I and shape II, we can see that options 1 and 3 result in the correct mapping.
Final Answer
A reflection of shape I across the x-axis followed by a 90° clockwise rotation about the origin, and a reflection of shape I across the y-axis followed by a 90° counterclockwise rotation about the origin.