IM G Unit 1 Lesson 20
Lines [i]l[/i] and [i]m[/i] are parallel. Mentally evaluate the measure in each figure.
[list=1][*]Translate lines [i]AE[/i] and [i]CD[/i] by the directed line segment from [i]B[/i] to [i]C[/i]. Label the images of [i]A, B, C, D, E [/i]as [i]A', B', C', D', E' [/i].[/*][/list]
[list=1][*]What is true about lines [i]AE[/i] and [i]A'E'[/i] ? Explain your reasoning.[br][/*][/list]
Identify 3 pairs of congruent angles. How do you know they are congruent?
An Alternate Explanation
[list=1][*]Rotate line [i]AE[/i] by 180 degrees around point [i]C.[/i] Label the images of [i]A, B, C, D, E [/i]as [i]A', B', C', D', E' [/i].[/*][/list]
[list=1][*]What is true about lines [i]AE[/i] and [i]A'E'[/i]? Explain your reasoning.[/*][*][/*][/list]
IM G Unit 1 Lesson 20 from IM Geometry by Illustrative Mathematics, https://im.kendallhunt.com/HS/students/2/1/20/index.html. Licensed under the Creative Commons Attribution 4.0 license, [url=https://creativecommons.org/licenses/by/4.0/]https://creativecommons.org/licenses/by/4.0/[/url].
Identify 3 pairs of congruent angles. How do you know they are congruent?