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Rotate a Figure 90 about the origin
Triangle ABC has vertices A(1,2), B(-1,-1) and C (2,0). If the triangle is rotated 90 clockwise about the origin what would the new coordinates be? xy A12 B C20 y-x A’2 B’1 C’0-2
Rotate a figure 180 about the origin
Triangle ABC has vertices A(-4,-1), B(-2,-5) and C (-2,-1). If the triangle is rotated 180 clockwise about the origin what would the new coordinates be? xy A-4 B-2-5 C-2 -x-y A’41 B’25 C’21
Rotate a figure 270 about the origin
Triangle ABC has vertices A(-2,0), B(-3,5) and C (-1,2). If the triangle is rotated 180 clockwise about the origin what would the new coordinates be? xy A-20 B-35 C2 -yx A’0-2 B’-5-3 C’-2
Rotational Symmetry A figure can be rotated less than 360 degrees about its center so the images matches the original figure
Determine if the star has rotational symmetry. If it does describe the angle of rotation. Yes, because the pattern repeats in 5 even intervals. The angle of rotation 360/5= 72 degrees.
Homework Page 531 (3-6 all and 9-16 all)
7.3 Rotations Advanced Geometry.
Rotations Goal Identify rotations and rotational symmetry.
12.6 Rotations and Symmetry Rotation- a transformation in which a figure is turned around a point Center of rotation- the point the figure is rotated around.
Warm Up Draw an example of a reflection: Draw an example of a figure that has one or more lines of symmetry: Find the new coordinates of the image after.
7-2 Similarity and transformations
1.6 Rotations and Rotational Symmetry
Review Please bring a: pencil, eraser, protractor, compass and calculator.
Unit 5: Geometric Transformations.
1 Rotations and Symmetry 13.6 LESSON Family Crests A family crest is a design that symbolizes a family’s heritage. An example of a family crest for a Japanese.
Rotations. Graph the following coordinates, then connect the dots (2, 1) (4,1) (2, 5) X y Rotate the triangle 90° clockwise about the origin and graph.
Splash Screen. Lesson Menu Five-Minute Check (over Lesson 11–2) Then/Now New Vocabulary Example 1:Rotate a Figure about a Point Example 2:Rotate a Figure.
Linear Algebra THURSDAY, AUGUST 14. Learning Target I will understand what is meant by turn or rotational symmetry and how each point in a figure is related.
PRE-ALGEBRA Warm-Up for Lesson 9-10 When you write a rule to describe a translation, you can choose corresponding (matching) points on a figure and it’s.
Reflection Yes No. Reflection Yes No Line Symmetry.
12.1 – Reflections 12.5 – Symmetry M217 – Geometry.
Warm Up Translate the following coordinates: Translate the following coordinates: (-3, -2)(-2, 2)(0,4) (x + 2, y – 4)(-3, -2)(-2, 2)(0,4) (x + 2, y.
Warm up What type of transformation is shown? Write the algebraic representation. Write the coordinates of the original triangle after reflection over.
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