What is a glide reflection?

Slides:

Advertisements

Similar presentations

WARM UP FEBRUARY 5, What is the scale factor of the line AB? A(4,8) B(3, 9) A(2, 4) B(3/2, 9/2) 2. What two transformations create a glide reflection?

Advertisements

Warm Up Identify each transformation

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.

Homework Discussion Read pages 383 – 388 Page 394: 7, 21 – 24, 27 – 29, 35-45, 47,

Homework Discussion Read pages 372 – 382 Page 394: 1 – 6, 11 – 12,

Pre-Algebra 5.8 Symmetry. Warm Up Identify each as a translation, rotation, reflection, or none of these. A. B. reflection rotation C. D. none of the.

Unit 5: Geometric Transformations.

12-5 Symmetry Holt Geometry.

Draw rotations in the coordinate plane.

Symmetry 9-5 Warm Up Lesson Presentation Lesson Quiz

Repeating Figures and Symmetries How can tessellations be made with repeating figures? What four types of symmetry do you look for in repeating figures?

Symmetry Figures are identical upon an operation Reflection Mirror Line of symmetry.

Warm up What type of transformation is shown? Write the algebraic representation. Write the coordinates of the original triangle after reflection over.

Warm Up Problem of the Day Lesson Presentation Lesson Quizzes.

9-5 Symmetry Holt McDougal Geometry Holt Geometry.

Materials Reminders. Get out your agenda if you see your name below. You need to come to my room tomorrow. Period 2Period 7.

2.4 –Symmetry. Line of Symmetry: A line that folds a shape in half that is a mirror image.

LESSON 5-1 I can draw reflected images. I can recognize and draw lines of symmetry.

Symmetry 9-5 Warm Up Lesson Presentation Lesson Quiz

Symmetry LESSON 58DISTRIBUTIVE PROPERTY PAGE 406.

Symmetry 9-5 Warm Up Lesson Presentation Lesson Quiz

Warm Up Which of the following is NOT a rigid transformation (or isometry) of the image below: a. b. C. d.

9-4 COMPOSITIONS OF ISOMETRIES. Isometries Isometry: transformation that preserves distance, or length. Translations, reflections, and rotations are isometries.

Warm up 1.Rotate P(-4, -4) 180  2.Rotate Q(-1, -3) 90  CCW 3.If a function is odd and one point on it is R(-3, 4). Name another point. 4.If a function.

Section 1.3. Warm Up 1. Draw a line that divides a right angle in half. 2. Draw three different squares with (3, 2) as one vertex.

Objective: Sequences of transformations.

Warm up Rotate P(-4, -4) 180 Rotate Q(-1, -3) 90 CCW

Warm Up: Find the length of ST

Symmetry 9-5 Warm Up Lesson Presentation Lesson Quiz

Symmetry 9-5 Warm Up Lesson Presentation Lesson Quiz

Symmetry What is reflectional symmetry? What is rotational symmetry?

Warm up Rotate P(-4, -4) 180 Rotate Q(-1, -3) 90 CCW

Triangle ABC has vertices A(1, 3), B(–2, –1) and C(3, –2)

Symmetry Warm Up Lesson Presentation Lesson Quiz

Warm-Up Triangle RST has vertices R(0,4), S(3,3), and T(1, 1). Choose the graph that correctly displays a translation along – 4, 0, and a rotation of.

2.4 Symmetry Key concepts: Lines of symmetry Rotational Symmetry

A movement of a figure in a plane.

Warm up Rotate P(-4, -4) 180 Rotate Q(-1, -3) 90 CCW

Warm up Rotate P(-4, -4) 180 Rotate Q(-1, -3) 90 CCW

Warm Up Find an angle between 0° and 360° that is coterminal with 1190°.

Section 12–5 Geometry PreAP, Revised ©2013

Warm up Rotate P(-4, -4) 180 Rotate Q(-1, -3) 90 CCW

Warm up Rotate P(-4, -4) 180 Rotate Q(-1, -3) 90 CCW

Algebraic Representations of Transformations

Warm Up – August 23, 2017 How is each function related to y = x?

12-5 Symmetry Warm Up Lesson Presentation Lesson Quiz Holt Geometry.

9.5 : Symmetry I can identify line and rotational symmetries in two‐dimensional figures. I can identify plane and axis symmetries in three‐dimensional.

Lesson 12.6 Symmetry pp

Rotation: all points in the original figure rotate, or turn, an identical number of degrees around a fixed point.

9.5 Apply Compositions of Transformations

Warm up Rotate P(-4, -4) 180 Rotate Q(-1, -3) 90 CCW

Module 1 Topic C – Lesson 14 – Reflections

Symmetry 9-5 Warm Up Lesson Presentation Lesson Quiz

Symmetry Warm Up Lesson Presentation Lesson Quiz

DRILL What would be the new point formed when you reflect the point (-3, 5) over the origin? If you translate the point (-1, -4) using the vector.

Warm up Rotate P(-4, -4) 180 Rotate Q(-1, -3) 90 CCW

Choose the correct translation from pre-image to image B

Dilations NOT an isometry.

12-5 Symmetry Warm Up Lesson Presentation Lesson Quiz Holt Geometry.

Warm up Rotate P(-4, -4) 180 Rotate Q(-1, -3) 90 CCW If a function is odd and one point on it is R(-3, 4). Name another point. If a function is.

Warm Up Problem of the Day Lesson Presentation Lesson Quizzes 1.

8th Grade: Chapter 6 TRANSFORMATIONS

9.4 Symmetry Brett Solberg AHS ‘11-’12.

Unit 1: Transformations in the Coordinate Plane

12-5 Symmetry Warm Up Lesson Presentation Lesson Quiz Holt Geometry.

Symmetry Objective: To identify reflectional (line), rotational, and point symmetry using reflections and rotations.

Notes Over Rotations A _______________is a change of position or size of a figure. transformation turn rotation.

Presentation transcript:

What is a glide reflection? Warm Up What is a glide reflection?

Announcements Quiz Friday No more retention quizzes Retest needs to be done during tutorials by the end of the week.

Line of Symmetry A figure has line symmetry or reflectional symmetry if there is a reflection for which the figure is its own image. The line of reflection is called a line of symmetry and divides the figure in half.

Example: Reflectional Symmetry How many lines of symmetry does the rectangle have?

Rotational Symmetry A figure has rotational symmetry if there is a rotation of 180 degrees or less for which the figure is its own image.

Example: Rotational Symmetry Does this figure have rotational symmetry?

Point Symmetry A figure with 180 degree rotational symmetry also has point symmetry.

Example: Identify Symmetry Do the figures have reflectional symmetry, rotational symmetry, neither or both?

Homework Pg. 341 #2-17