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U2 L4 Reflections Day 2.notebook Unit 2 Lesson 4 Reflections Day 2 U2 L4 Reflections Reflections each preimage has an image that is the same distance from the line of the reflection as the original point but in the opposite direction. The image of any point on the reflection line is itself. The Reflection Line is the Perpendicular Bisector of the segment connecting a preimage with its image. Reflections Preserve Distance and Angle Measure Reflections Reverse Orientation Important Facts!!

U2 L4 Reflections Day 2.notebook - henhudschools.org · U2 L4 Reflections Day 2.notebook Unit 2 Lesson 4 Reflections Day 2 U2 L4 Reflections Reflections each preimage has an image

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Page 1: U2 L4 Reflections Day 2.notebook - henhudschools.org · U2 L4 Reflections Day 2.notebook Unit 2 Lesson 4 Reflections Day 2 U2 L4 Reflections Reflections each preimage has an image

U2 L4 Reflections Day 2.notebook

Unit 2 Lesson 4 

Reflections Day 2

U2 L4   Reflections

Reflections ­ each pre­image has an image that is the same distance from the line of the reflection as the original point but in the opposite direction.  The image of any point on the reflection line is itself.

The Reflection Line is the Perpendicular Bisector of the segment connecting a pre­image with its image.

Reflections Preserve Distance and Angle Measure

Reflections Reverse Orientation

Important Facts!!

Page 2: U2 L4 Reflections Day 2.notebook - henhudschools.org · U2 L4 Reflections Day 2.notebook Unit 2 Lesson 4 Reflections Day 2 U2 L4 Reflections Reflections each preimage has an image

U2 L4 Reflections Day 2.notebook

Be sure to use "prime" notation.

Page 3: U2 L4 Reflections Day 2.notebook - henhudschools.org · U2 L4 Reflections Day 2.notebook Unit 2 Lesson 4 Reflections Day 2 U2 L4 Reflections Reflections each preimage has an image

U2 L4 Reflections Day 2.notebook

The Reflection Line is the Perpendicular Bisector of the segment connecting a pre­image with its image.

https://www.mathopenref.com/reflect.html

Page 4: U2 L4 Reflections Day 2.notebook - henhudschools.org · U2 L4 Reflections Day 2.notebook Unit 2 Lesson 4 Reflections Day 2 U2 L4 Reflections Reflections each preimage has an image

U2 L4 Reflections Day 2.notebook

Construct the line of reflection for the figures. 

Try it again!

0°109

Do you think you could construct a line of reflection?

A

BC = C'

B'

A'

https://www.mathopenref.com/constbisectline.html

0°257

Page 5: U2 L4 Reflections Day 2.notebook - henhudschools.org · U2 L4 Reflections Day 2.notebook Unit 2 Lesson 4 Reflections Day 2 U2 L4 Reflections Reflections each preimage has an image

U2 L4 Reflections Day 2.notebook

A

B

C

Hint... construct a line from a vertex to the reflection line and use your compass to measure the distance to the reflection line.

0°113

Reflect the triangle over  DE

Page 6: U2 L4 Reflections Day 2.notebook - henhudschools.org · U2 L4 Reflections Day 2.notebook Unit 2 Lesson 4 Reflections Day 2 U2 L4 Reflections Reflections each preimage has an image

U2 L4 Reflections Day 2.notebook

Construct the reflection of ΔABC over line m.

Homework 

U2 L4 HW 2

Page 7: U2 L4 Reflections Day 2.notebook - henhudschools.org · U2 L4 Reflections Day 2.notebook Unit 2 Lesson 4 Reflections Day 2 U2 L4 Reflections Reflections each preimage has an image

U2 L4 Reflections Day 2.notebook

Homework 

U2 L6 Reflections HW 2