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Warm up

Warm up. 1. The supplement of is which angle? 2. Joey says equals 100 °. Could he be right? Why or why not? What transformation is being described: (x,y) = (-x, y – 3)

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Warm up

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  1. Warm up 1. The supplement of is which angle? 2. Joey says equals 100°. Could he be right? Why or why not? What transformation is being described: (x,y) = (-x, y – 3) 4. In triangle xyz, x = (1,2); y = (4,4); and z = (3, -1). If the image is reflected over the y-axis, what are the new points? No, because <ARG and <ARN are supplementary, and 100+70 is not equal to 180 Reflected over the y-axis and down 3 units x’ = (-1,2); y’(-4,4); z’ = (-3,-1)

  2. Homework: pg.64 8-16 even 8. Translate to the right 3 units • Translate up 4 units • Reflect over the x-axis • Reflect over the y-axis 16. Rotate 180 degrees about the origin

  3. Closure Problem In the following figure, AB is 4 more than CD, and BC is two times the size of CD. If AD=16, find AB and BD.

  4. Study Guide You’ll need to know: • How to name a segment, ray, line, angle, plane • How to use the segment and angle addition postulates • The difference between a postulate and a conjecture • Supplementary and complementary angles • What a bisector does • Transformation rules

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