REFLECTIONSPg 734 of Textbook

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REFLECTIONS

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Reflection: A transformation that ___________ a figure across a line called the ___________________________.

Each point and its image are the ___________________from the ____________________________.

The image has the ____________________ and ______________________ as the preimage;

Therefore, the preimage and image are _____________________.

NOTE: In 8th grade, you are only required to reflect across the __________________ and _________________.

You can use COORDINATE NOTATION to describe reflections across the x-axis and y-axis.

Reflect across the x-axis Reflect across the y-axis RULES FOR REFLECTION

flips line of reflectionsame

distanceline of reflection

same size

same shapecongruen

tx-axis

y-axis

1. Draw parallelogram ABCD with vertices atA (-3, 3), B (2, 3), C (4, 1), and D (-1, 1).

Then find the coordinates of the vertices of the image after a reflection across the x-axis and draw the image.

Original Image

A (-3, 3)

B (2, 3)

C (4, 1)

D (-1, 1)

#14 PA8 Sem2 Practice Exam B

Triangle EFG has vertices

Find the coordinates of the image of point E after a reflection across the y-axis.

A. (2, 5)

B. (-2, 5)

C. (-5, 2)

D. (-5, -2)

#4 Explorations Workbook Pg 203

Graph a reflection of Quadrilateral MNPQ across the y-axis.

(5, 2), (2, 0), (8, 2).E F G