9.6 Dilations By Brit Caswell.

Slides:

Advertisements

Similar presentations

Notes Dilations.

Advertisements

Bellwork Find the geometric mean of 5 & 18 Find the geometric mean of 5 & 18 Find the geometric mean of 3 & 44 Find the geometric mean of 3 & 44 Solve.

Quiz Use the properties of similar figures to answer 1 and 2:

Circle A is centered at (2,2) with a radius of 12 cm and Circle B is centered at (8,-2) with a diameter of 6 cm. Determine the translation and dilation.

Symmetry and Dilations

RATIOS OF SCALE DRAWINGS. SCALE DRAWINGS SCALE DRAWINGS: A scale drawing is a drawing that represents a real object. The scale of the drawing is the ratio.

Pre-Algebra 7-7 Scale Drawings HW: Page 370 #1-6 and #21-26.

Dilations Section 9.7. Dilation A dilation is a transformation that stretches or shrinks a figure to create a similar figure. A dilation is not an isometry.

Properties of Dilations, Day 2. How do you describe the properties of dilations? Dilations change the size of figures, but not their orientation or.

EXAMPLE 1 Identify dilations Find the scale factor of the dilation. Then tell whether the dilation is a reduction or an enlargement. a. SOLUTION a. Because.

Transformation Geometry Dilations. What is a Dilation?  Dilation is a transformation that produces a figure similar to the original by proportionally.

9-7 Dilations Holt McDougal Geometry Holt Geometry.

Scale Drawing - a two dimensional drawing that is similar to the object it represents. Scale Model - a three-dimensional model that is similar to the object.

Page 374 #7-12 & #30-34 (Spiral Review)

Similarity Transformations

Dilations in the Coordinate Plane

Warm-Up What is the scale factor of ABC to DEF?.

Lesson 4.1 Read through and highlight all vocabulary.

Chapter 9: Transformations

GEOMETRY HELP Circle A with 3-cm diameter and center C is a dilation of concentric circle B with 8-cm diameter. Describe the dilation. The circles are.

Making Sense of the Universe

Lesson 9-7 Dilations Rigor: Dilate figures on and off a coordinate plane, calculate the scale factor of a dilation Relevance – Optometry, art, graphic.

or * * P =22 in P =40 cm

Dilation: a transformation that produces an image that is the same shape as the original, but is a different size. A dilation stretches or shrinks the.

Transformations ENLARGEMENTS A Enlarge: Scale factor 2 5cm 3cm 2cm 4cm 10cm 6cm A´A´

Geometry Section 6.7 Perform Similarity Transformations.

12-7 Dilations.

Do Now Find the value of every missing variable:.

9.6: Dilations. 9.6: Dilations A dilation is an enlargement if the scale factor is greater than 1 and a reduction if the scale factor is between.

Unit 2 Lesson 1.

Drawing Dilations.

Geometry 4-4 Dilations.

7.5; 10-29, / yes 21. yes 22. no 23. yes /2.

Warm Up – Tuesday, August 19th

Analytic Geometry Lesson 1 Mr. Lohuis

Composition of Isometries & Dilations

Notes 49 Dilations.

Defining Congruence in Terms of Rigid Motions

Using Math to Understand Our Solar System

8.2.7 Dilations.

Warm-Up How many lines of symmetry do the figures have? Draw them!

12.7 Dilations.

= Divide each measure by the GCF, 3. drawing length actual length

6.7 – Perform Similarity Transformations

A scale drawing is a drawing in which all parts of the drawing are reduced or enlarged by the same scale factor. A scale is a ratio that compares the measurements.

Enlarge the figure by a scale factor of 2 from the origin.

9-5: Dilations.

A’ B’ D’ C’ Draw a Point at the center of dilation (Point P).

9-6 Dilations 9-7 Similarity Transformations

Geometry is Everywhere By: Alena Krolczyk

7-7 Scale Drawings Warm Up Problem of the Day Lesson Presentation

Parts of Similar Triangles

9-6 Dilations 9-7 Similarity Transformations

Dilations Objective:.

7-7 Scale Drawings Warm Up Problem of the Day Lesson Presentation

Similarity and Transformations

Ch. 4-5 Similarity Transformations Ch. 4-6 Scale Models and Maps

4.5 Dilations Dilation – A transformation in which a figure is enlarged or reduced with respect to a fixed point. Scale Factor is the ratio of lengths of.

9.1 Translations By Brit Caswell.

2.7 Dilations Essential Question: How do you dilate a figure to create a reduction or enlargement?

Identify and graph dilations

11.7 Dilations/Rotation Objective: Students will be able to explain if a figure’s dilation will be an increase or decrease based on the scale factor.

Unit 1 Transformations in the Coordinate Plane

Dilations A dilation is a transformation that changes the size but not the shape of an object or figure. Every dilation has a fixed point that is called.

Identify line and rotational symmetries in 2 & 3-dimensioanl figures.

Page 7 Original Expression: Step 1: Step 2: Step 3:

Pages Draw a Point at the center of dilation (Point P).

Presentation transcript:

9.6 Dilations By Brit Caswell

What is a Dilation? A stretch! Think of Ant Man! Is a dilation a rigid motion? Pg 587

If the scale factor is < 1, the dilation is called a reduction. If the scale factor is > 1, the dilation is called an enlargement. What are the scale factors for each of these dilations? Pg 588

What is the scale factor? What is the center of dilation?

Draw the dilation with the scale factor n=2 and the center of dilation M. Z P G

A Perform the dilation with a scale factor ¼ and a center of dilation at C. S C

When looking through a telescope, an astronomer measures the diameter of the moon to be 2.2 cm. He knows that the telescope shows 1000 miles in each centimeter. What is the scale factor? What is the diameter of the moon? 2.2 cm Diameter of the moon is about 2200 mi.