PPT-4.2 Scale Diagrams Learning Outcome: To be able to identify and interpret the scale factor

Scale A comparison between the actual size of an object and the size of its diagramimage can be expressed as a ratio fraction percent in words or in a diagram Ratio 12 Fraction ½ . Objective: . Dilation. What is a . Dilation. ?. A dilation is a transformation that changes the size but not the shape of the figure. . We use “ .  ” to identify new points. . A Dilation can enlarge or reduce a figure by a . Dilation. A dilation is a transformation in which a figure is enlarged or reduced with respect to a fixed point . C. called the center of dilation and a scale factor . k, . which is the ration of lengths of the corresponding sides of the image and . Polygon. – a two-dimensional closed figure made of three or more line segments. 4.4 . Similar Polygons. Learning Outcome: To be able to identify, draw, and explain similar polygons and solve problems using the properties of similar polygons . Dilations. What is a Dilation?. Dilation. is a transformation that produces a figure similar to the original by proportionally shrinking or stretching the figure.. Dilated PowerPoint Slide. Proportionally. All scale drawings . must . have a scale written on them. Scales are usually expressed as ratios.. Normally for maps and buildings the ratio:. Drawing length: Actual length. For maps the ratio is normally in the ratio:. All scale drawings . must . have a scale written on them. Scales are usually expressed as ratios.. Normally for maps and buildings the ratio:. Drawing length: Actual length. For maps the ratio is normally in the ratio:. Scale, Scale Factor, & Scale Drawings. Objective:. 7.2.01 & 7.3.03. Essential Question:. . How can I use a scale factor to understand distances on a map or the size of a house or object?. Vocabulary:. Essential Question: . Do architects use the same scale factor for each room when designing a house? Why or why not?. Scale Drawing/Scale Models. Scale Drawings & Models are used to represent objects that are too large or too small to be drawn or built at actual size. Essential Question: . Do architects use the same scale factor for each room when designing a house? Why or why not?. Scale Drawing/Scale Models. Scale Drawings & Models are used to represent objects that are too large or too small to be drawn or built at actual size. on . Professionals in the Disability Community. Jacqueline D. Stone, PhD, Baltimore, MD, United States, MD - Kennedy Krieger Institute, UCEDD/LEND; . Waylon J. Howard, PhD, Baltimore, MD, United States, MD - Kennedy Krieger Institute, UCEDD/LEND; . 1 Vegetative state VS y SD - 4 Upper severe disabilit y SD + 5 y MD - 6 Upper moderate disabilit y MD + 7 Lower good recover GR - 8 Upper good recover y GR + References: Jennett B, Bond M: Asses 8. th. Math . Presented by Mr. Laws. Standard. 8.G.3 - Describe the effect of dilations, translations, rotations, and reflections on two-dimensional figures using coordinates. . Essential Question. 1.. . . 2.. . 3.. . Find the distance between each pair of points. Write your answer in simplest radical form.. 4. . C . (1, 6) and . D . (. –. 2, 0). 5.. . E. (–7, –1) and . F. (–1, –5). Geometric Stretching, Shrinking, and Dilations. Stretching/Shrinking. Horizontal. Affects the x-values. (2x, y) is a horizontal stretch. (. x, y) is a horizontal shrink.  . Vertical. Affects the y-values.