PPT-Similar Shapes and Scale Drawings

Warm Up Solve the proportions for x 2 4 5 6   In Petes blueprint the length of a side wall is 16 inches Find the actual length of the wall The back wall of the house is 33 feet long . Scale drawings of the crush are available on request There was a n article on this crush in the F armers Journal If anyone wants a copy of the art icle from that issue of the Farmers Journal please let me know The drawing is based on the actual crus Objectives. Learn to . write and solve problems using proportions. . Proportions. Proportions are frequently used to solve problems in mathematics.. Proportional reasoning can be applied in many situations, including reading and drawing maps, architecture, and construction. . 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 . Ch. 2 Lesson 3. Pg. 123. What will you will learn?. Enlarge Photographs. Make something from a pattern. Identify Similarity. Two figures are . similar. if the second can be obtained from the first by a sequence of transformations and dilations. Taking a close look at the . Statue of Liberty. Statue of Liberty . She is big!. She weighs 450,000 pounds. Gift from France in late 1800’s. 154 steps from pedestal to head of statue. Section 2-8. Goals. Goal. To find missing lengths in similar figures.. To use similar figures when measuring indirectly.. Rubric. Level 1 – Know the goals.. Level 2 – Fully understand the goals.. If triangles are similar are other things similar as well. Proportional Parts Conjecture. If two triangles are similar, then the length of the corresponding altitudes, medians, and angle bisectors are proportional to the lengths of the corresponding sides. This shows similar Triangles. 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:. Objectives. Specify the contents, formatting, and organization of engineering drawings. Correctly prepare and interpret formal, professional engineering drawings. Objectives (cont’d.). Discuss the primary differences between drawings used in manufacturing projects and those used in construction projects. Lesson 6: Scale Drawings and Models The floor plan below is an example of a scale drawing. A scale drawing is a diagram of an object in which the dimensions are in proportion to the actual dimensions of the object. Section 1: . What is a scale drawing?. Section 2:. Using proportions to find unknown quantities involving scale drawings.. Section 3:. Reproducing a figure using a scale.. Section 4:. Finding area and perimeter of shapes . In your Planner:. HW: . Page 37 #8 and . L. absheet. . Exercise 3. . SD Test back by . Friday!. . . Retakes. : . Fri. , Nov. 2 during class. On Desk:. STRETCHING AND SHRINKING (SS). Last night’s HW.