'Reflectional symmetry' diaporamas de présentation

Chapter 5

Chapter 5. Deductive Geometry ( ???? ). Euclid. 1. Congruent Triangles ( ????? ). S.S.S. (b) A.S.A (c) S.A.S. (d) R.H.S. 2. Similar Triangles ( ????? ). Equiangular ( ??? ) (A.A.A. or A.A.) (b) Three sides proportional ( ???? )(3 sides prop.). 3. Isosceles triangle ( ????? ).

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Translations, Rotations, Reflections, and Dilations

Translations, Rotations, Reflections, and Dilations. In geometry, a transformation is a way to change the position of a figure. In some transformations, the figure retains its size and only its position is changed. Examples of this type of transformation are:

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Chapter 3 Review

Chapter 3 Review. Bingo Answers!!!. Fill in your bingo card with the answers listed on the whiteboard. Not all answers will be used. As we go through the questions, work the problems and try to find the answer on your bingo card. #1.

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3.1: Symmetry in Polygons

3.1: Symmetry in Polygons. On the first day of school, Mr Vilani gave his 3 rd grade students 5 new words to spell. On each school day after that he gave them 3 new words to spell. In the first 20 days of school, how many new words had the students been given to spell?. Polygons.

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Translations

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Symmetry: A Visual Presentation

Symmetry: A Visual Presentation. A PowerPoint Presentation created by Mrs. Gamache using the collection of web pages created by the Adrian Bruce and students of 6B http://www.adrianbruce.com Geometry, Unit 8, Day 6. Line Symmetry.

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Warm Up

Warm Up. Aim# 9-7: How do we identify transformations in tessellations, and figures that will tessellate?. A tessellation or tiling, is a repeating pattern of figures that completely covers a plane without gaps or overlaps.

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Symmetry

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Symmetry

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SYMMETRY

SYMMETRY. What is symmetry?. Symmetry, in geometry is a correspondence or matching of parts of an object. These parts correspond in size, shape and position after certain geometric operations are carried out.

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3-D figures

3-D figures. Reflectional Symmetry. For 2D figure: If a plane figure can be divided by a line into two identical parts and these parts are mirror images of each other, then we say that the figure has reflectional symmetry. . axis of symmetry-> . Reflectional Symmetry. For 3D- figure:

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SYMMETRY

SYMMETRY. Reflectional Symmetry Rotational Symmetry. Examples of Reflectional/Rotational Symmetry. Courtesy of www.flickr.com. Questions `. 1) Identify all US states that have reflectional or rotational symmetry or both in their respective names

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Reflections

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Objectives

Objectives. Define and draw lines of symmetry Define and draw dilations. Symmetry defined. A figure has symmetry if there is a transformation such that the preimage and image coincide Reflectional symmetry Rotational symmetry. Reflectional symmetry .

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Symmetry

Symmetry. 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 preimage (original image) Can you fold it onto itself exactly? Can you rotate it without anyone knowing?

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Geometry warm up

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What do you see in this picture?

What do you see in this picture?. What Other observations can you make?. What do you think is happening in this picture?. Now What observations can you make about the picture?. Can you make any conclusions about the picture?. What do You expect to be in the missing chunk of the picture?.

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INTRODUCTION TO TESSELLATIONS

INTRODUCTION TO TESSELLATIONS. Transformations (translations, reflections & rotations) By Amy & Laura Horace Mann Middle School. TRANSLATIONS. Translations are slides of images. REFLECTIONS. Reflections are flips of images. Images are flipped over lines of reflections .

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Reflectional Symmetry

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Line Symmetry (or Reflectional Symmetry) in Polygons

Line Symmetry (or Reflectional Symmetry) in Polygons. A figure has line symmetry ( or reflectional symmetry ) if it can be reflected across a line so the image coincides exactly with the preimage . The line is called the line of symmetry (or an axis of symmetry ). E.

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