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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)
3.1 Symmetry & Coordinate Graphs. Point symmetry – two distinct points P and P are symmetric with respect to point M if and only is M is the midpoint.
Dilations. Dilation Scale Factor Center of Dilation.
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SREWSNA KROWEMOH 1. (-y, x)10. A(-1, 1) B(-5, 1) C(-5, 4) 2. (-x, -y)14. A(-3, -3) B(-3, -1) C(1, -1) 3. D18. G 4. E22. J 5. P26. A 8. BC.
Holt McDougal Geometry Rotations Holt Geometry Warm Up Warm Up Lesson Presentation Lesson Presentation Lesson Quiz Lesson Quiz Holt McDougal Geometry.
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Defining Rotations, Reflections, and Translations ~ Adapted from Walch Education.
What is similar about these objects? What do we need to pay attention to when objects are rotated?
Do Now 1) Draw a coordinate grid (like below) and label the axes 2)Graph the point (2,1) 3) Translate (2,1) 4 units up and 1 unit left 4)Write the translation.
MA.912.G.3.4: Apply transformations (translations, reflections, rotations, dilations, and scale factors) to polygons to determine congruence, similarity,
Slide Rigid Motion in a Plane Geometry Mrs. Spitz Spring 2005.
1.7: Motion in the Coordinate Plane Expectation: G3.1.1: Define reflection, rotation, translation, and glide reflection and find the image of a figure.
FeatureLesson Geometry Lesson Main Tell what type(s) of symmetry each figure has. 1.D 2.O reflectional: horizontal line of symmetry reflectional: horizontal.
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Reflections on the Coordinate Plane. The undisturbed surface of a pond acts like a mirror and can provide the subject for beautiful photographs.
Co-ordinates & Rotations 2. The objective of this lesson is: To work out the centre of rotation and the angle of rotation of a shape from its original.
Learn to recognize, describe, and show transformations. Course Translations, Reflections, and Rotations.
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Holt Geometry 12-7 Dilations 12-7 Dilations Holt Geometry Warm Up Warm Up Lesson Presentation Lesson Presentation Lesson Quiz Lesson Quiz.
Translations on the Coordinate Plane. In chess, there are rules governing how many spaces and in what direction each game piece can be moved The diagram.
Recognise and visualise transformations – reflection, rotation and translation.
Reflections Advanced Geometry Rigid Transformations Lesson 2.
5.3 Bisectors in a Triangle When three or more lines intersect at one point, they are concurrent. –The point at which they intersect is the point of concurrency.
MODULE IV VOCABULARY PART I. MODULE IV Module IV more than any module thus far, will overlap with others. Module IV is called simply, “Triangles” and.
To transform something is to change it. In geometry, there are specific ways to describe how a figure is changed. The transformations you will learn about.
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Transformations on the Coordinate Plane WHAT IS THAT? TRANSFORMATION? I can tell you what its not!!!
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