Reflections Groups of 2 Think Pair Share How

Reflections Groups of 2: “Think, Pair, Share” “How is the image related to the original figure in a REFLECTION. ” You should be able to find at least 3 ways. © Don Clark

This is a REFLECTION © Don Clark This is NOT a REFLECTION

This is a REFLECTION This is NOT a REFLECTION 5 cm 2 cm 9. 2 cm 5 cm © Don Clark 5 cm 9 cm

This is a REFLECTION This is NOT a REFLECTION 4. 5 cm 1. 2 cm 3 cm 1. 2 cm © Don Clark 1. 2 cm 3 cm

This is a REFLECTION 5. 2 cm This is NOT a REFLECTION 5. 2 cm 3 cm 3 cm 5. 2 cm 3 cm © Don Clark

This is a REFLECTION © Don Clark 2 m 2 m 4 m 4 m 2 m 2 m This is NOT a REFLECTION

TESTERS Are these REFLECTIONS? QUESTION #1 ANSWER: © Don Clark (Click here) NO

TESTERS Are these REFLECTIONS? QUESTION #2 ANSWER: © Don Clark (Click here) YES

TESTERS Are these REFLECTIONS? QUESTION #3 ANSWER: © Don Clark (Click here) NO

TESTERS Are these REFLECTIONS? QUESTION #4 ANSWER: © Don Clark (Click here) NO

TESTERS Are these REFLECTIONS? QUESTION #5 ANSWER: © Don Clark (Click here) NO

TESTERS Are these REFLECTIONS? QUESTION #6 ANSWER: © Don Clark (Click here) YES

TESTERS Are these REFLECTIONS? QUESTION #7 A A D' © Don Clark B' B D A' C C D B C' Letters don’t end up in the correct places ANSWER: (Click here) NO

TESTERS Are these REFLECTIONS? QUESTION #8 ANSWER: © Don Clark (Click here) YES

TESTERS Are these REFLECTIONS? QUESTION #9 ANSWER: © Don Clark (Click here) NO

Choose one: Proceed to the notes on REFLECTIONS © Don Clark RETURN to beginning of the “TESTER” questions.

Reflections 4 cm Properties of all REFLECTIONS: Object and Image are congruent. © Don Clark Corresponding points are the same perpendicular distance from the line of reflection.

All Reflections have: A line of reflection - this acts like a “mirror. ” Reflection line You used to call reflections “flips. ” © Don Clark

What happens when you join corresponding points in a reflection? D' This is a “PATH” E' F' D E F These “paths” are perpendicular to the reflection line & parallel to each other. © Don Clark

Example 1: Reflect this figure on line “S” Where will the image be? (Draw your answer now. ) Were you close? A' 6 cm 4 cm C' B' © Don Clark 10 cm A 6 cm C 4 cm 10 cm B

Example 2: Reflect this figure on line “S” A Where will the image be? (Draw your answer now. ) Were you close? B C C' B' © Don Clark A'

Example 3: Reflect this figure on line “S” Where will the image be? (Draw your answer now. ) A' A C' C Were you close? B © Don Clark B'

SUMMARY: - Translations (slides) - Rotations (turns) - Reflections (flips) © Don Clark