9.2 Reflections & Congruence

9.2 Reflections & Congruence
A [b]reflection[/b] is a transformation that flips a figure across a line. The line is called the [b]line of reflection[/b].
Task 1: Reflection across the x-axis
[b]Answer the questions in your notebook for TASK 1 before moving on to the next task.[/b]
Task 2: Reflection across the y-axis
[b]Answer the questions in your notebook for TASK 2 before moving on to the next task.[/b]
TASK 3: Reflections & Congruence
[b]Trapezoid [i]ABCD[/i][/b] (preimage) has been reflected across the [i]y[/i]-axis to [b]Trapezoid [/b][i]A'B'C'D' [/i](image).[br][br]1. Begin by selecting [b]point [/b][i]A, B, C, or D[/i](blue) and moving its location. Observe what happens to the side lengths and angles.[br]2. Move the remaining points until you have a new trapezoid where you can read all the angle measures and side lengths. [i]Recall: [u]A trapezoid has 1 pair of parallel sides[/u].[br][/i]3. Record all the angle measure and side lengths in your notebook.[br]4. Answer the questions in your notebook before moving on to the next task.
[b]Answer the remaining questions for TASK 3 in your notebook.[/b]

Information: 9.2 Reflections & Congruence