University:
High School
Course:
High School Algebra
Academic year:

2022
Views:

305

Pages:

46
Author:

hormonihi

Vocabulary Unit E - Topic 9 transformation a change in the position of a figure such as a reflection, rotation and translation translation (slide) a figure is moved along a straight line with out turning or flipping reflection (flip) a figure is FLIPPED onto a congruent image rotation (turn) a figure is turned so that each point stays an equal distance from a single point RECALL PRIOR KNOWLEDGE: Use the graphs below to answer the following questions. [A graph is shown with points A, B, C, and D labeled on it. The x-axis ranges from -6 to 6, and the y-axis ranges from -5 to 5.] What are the coordinates for point A? Answer: (1, 3) What are the coordinates for point B? Answer: (2, 1) What are the coordinates for point C? Answer: (-5, -2) What are the coordinates for point D? Answer: (4, -7) Got It? LMNP is a parallelogram. Describe in words how to map LMNP to its image L'M'N'P'. Reflection over the line y = -1 Part III: Example The vertices of ΔABC are A(1, 3), B(-2, 4), and C(-1, 1). Graph ΔABC and ΔA'B'C', its image after a reflection across the x-axis. Got It? If you reflect ΔJKL across the y-axis, what are the coordinates of J'? J'(-1,1)