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.

Slides:

Advertisements

Similar presentations

7-7 Transformations Warm Up Problem of the Day Lesson Presentation

Advertisements

GEOMETRY SLIDESHOW 2:.

8.9 Congruent Polygons I can identify congruent figures and use congruence to solve problems.

Presentation by: Tammy Waters Identify, predict, and describe the results of transformation of plane figures: A) Reflections, B) Translations, C)

Symmetry Reflectional Rotational G. CO. 3 Given a rectangle, parallelogram, trapezoid, or regular polygon, describe the rotations and reflections that.

8-11 Line Symmetry Warm Up Problem of the Day Lesson Presentation

Line of Symmetry- a line on which a figure can be folded so that both sides match exactly.

5-7 Transformations Warm Up Problem of the Day Lesson Presentation

Quiz Determine the slope of each line. 1. PQ 2. MN 3. Which pair of lines are parallel? In the figure, WXYZ  ABCD 4. Find XY. 5. Find mB.

9.6 Symmetry We are going to complete the tessellation first so get out your triangles.

Symmetry Two Types: 1. Line Symmetry (can be called reflectional symmetry)– if you can fold a shape and have the edges meet The place where you fold is.

6 th Grade Math Homework Chapter 7.10 Page #6-14 & SR ANSWERS.

Reflection and Rotation Symmetry

Translations, Rotations, and Reflections

GEOMETRY (HOLT 9-5) K. SANTOS Symmetry. A figure has symmetry if there is a transformation (change) of the figure such that the image coincides with the.

Unit 5: Geometric Transformations.

Describing Rotations.

12-5 Symmetry Holt Geometry.

Symmetry 9-5 Warm Up Lesson Presentation Lesson Quiz

8-11 Symmetry Course 2 Warm Up Warm Up Problem of the Day Problem of the Day Lesson Presentation Lesson Presentation.

7-8 Symmetry Course 3 Warm Up Warm Up Problem of the Day Problem of the Day Lesson Presentation Lesson Presentation.

Translations, Rotations, Reflections, and Dilations.

Warm Up 1. Give the coordinates of triangle ABC with vertices (7, 2), (1, 2), (4, –5) reflected across the y-axis. 2. Give the coordinates of triangle.

Reflections Students will be able to reflect figures across the x and y axis.

6 th Grade Math Homework Chapter 7.9 Page #1-6 & SR Answers.

CONFIDENTIAL1 Good Afternoon! Today we will be learning about Similarity and Symmetry Let’s warm up : Write Reflection, Rotation or Translation to describe.

Symmetry TRANSFORMATIONS Rotation Translation Reflection Dilation HOMEWORK: Symmetry WS.

Reflection and Rotation Symmetry Reflection-Symmetric Figures A figure has symmetry if there is an isometry that maps the figure onto itself. If that.

Chapter 9.5 Symmetry.

Warm Up Problem of the Day Lesson Presentation Lesson Quizzes.

Symmetry Rotation Translation Reflection. Symmetry.

8-10 Transformations Warm Up Warm Up Lesson Presentation Lesson Presentation Problem of the Day Problem of the Day Lesson Quizzes Lesson Quizzes.

9-5 Symmetry Holt McDougal Geometry Holt Geometry.

Transparency 6 Click the mouse button or press the Space Bar to display the answers.

An image has Reflective Symmetry if there is at least one line which splits the image in half so that one side is the mirror image of the other.

SYMMETRY GOAL: TO IDENTIFY LINES OF SYMMETRY IN AN OBJECT.

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

EQ: How do you rotate a figure 90, 180 or 270 degrees around a given point and what is point symmetry? Rotations.

Holt McDougal Geometry Compositions of Transformations Holt Geometry Warm Up Warm Up Lesson Presentation Lesson Presentation Lesson Quiz Lesson Quiz Holt.

PRE-ALGEBRA “Symmetry and Reflections” (9-9) A figure has symmetry when one half is a mirror image of the other half (in other words, both halves are congruent).

EQ: How can I identify symmetry in figures? Do Now 1. Give the coordinates of triangle ABC with vertices (7, 2), (1, 2), (4, –5) reflected across the y-axis.

Reflection Symmetry When you can draw a line through a plane figure so that the two halves match each other. Line Symmetry An imaginary line that you.

Warm Up 1.      360 Course 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 Triangle ABC has the following vertices A(7, 2), B(1, 2), C(4, 5). 1.Give the coordinates of the image after is has been translated 3 units left.

Translation Symmetry (Sliding).

Click the mouse button or press the Space Bar to display the answers.

5-8 Symmetry Warm Up Problem of the Day Lesson Presentation

Symmetry 9-5 Warm Up Lesson Presentation Lesson Quiz

Symmetry 9-5 Warm Up Lesson Presentation Lesson Quiz

Line Symmetry and Rotational Symmetry

Symmetry Warm Up Lesson Presentation Lesson Quiz

Math Topic 15 Congruence and Symmetry

Section 12–5 Geometry PreAP, Revised ©2013

7-10 Transformations Warm Up Problem of the Day Lesson Presentation

DRILL What would be the new point formed when you reflect the point (-2, 8) over the origin? If you translate the point (-1, -4) using the vector.

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

What would be the new point formed when you reflect the point (-2, 8) over the origin? If you translate the point (-1, -4) using the vector.

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

Symmetry 9-5 Warm Up Lesson Presentation Lesson Quiz

Symmetry Warm Up Lesson Presentation Lesson Quiz

Symmetry Rotation Translation Reflection.

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

Presentation & Practice

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

Presentation transcript:

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 thesetranslation

Learn to identify symmetry in figures.

line symmetry line of symmetry rotational symmetry Vocabulary

Nature provides beautiful examples of symmetry, such as the wings of a butterfly or petals of a flower. Symmetric objects have parts that are congruent. VOCAB: A figure has line symmetry if you can draw a line through it so the the two sides are mirror images of each other. The line is called line of symmetry.

If you fold a figure on the line of symmetry, the halves match exactly. Helpful Hint

A. Complete the figure. The dashed line is the line of symmetry. Example: Drawing Figures With Line Symmetry

B. Complete the figure. The dashed line is the line of symmetry. Example: Drawing Figures With Line Symmetry Continued

A. Complete the figure. The dashed line is the line of symmetry. Try This

B. Complete the figure. The dashed line is the line of symmetry. Try This

VOCAB: A figure has rotational symmetry if you can rotate the figure around some point so that it coincides with itself. The point is the center of rotation, and the amount of rotation must be less than one full turn or 360°. To find the amount of degrees you can turn the figure so that it looks the same, divide 360 by the number of “folds”. 6-fold rotational symmetry The figure coincides with itself every 60° (360/6) 8-fold rotational symmetry The figure coincides with itself every 45° (360/8)

A. 2-fold Complete the figure. The point is the center of rotation. The figure coincides with itself every 180° Example: Drawing Figures With Rotational Symmetry

B. 5-fold Complete the figure. The point is the center of rotation. The figure coincides with itself every 72° Example: Drawing Figures With Rotational Symmetry Continued

A. 8-fold Complete the figure. The point is the center of rotation. The figure coincides with itself every 45° Try This

B. 10-fold The figure coincides with itself every 36° Complete the figure. The point is the center of rotation. Try This

Does the figure described have symmetry? 1. a regular hexagon 2. the letter F 3. the letter M yes no yes Lesson Quiz: Part 1

4. Complete the figure. The dashed line is the line of symmetry. Lesson Quiz Part 2