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Similar Figures and Scale Drawings6.3
Similar Figures Corresponding angles have equal measurementsLength of corresponding sides are in proportion
Examples of Similar Figures
The triangles are similar find the missing lengthX in 10in 10in 4in
Scale Drawing Used to enlarge or reduce a drawing that is similar to the actual object Example: Map
The scale is 2 cm:15 km Find the actual distance
A scale Drawing has a scale of ½ in for 10 ftA scale Drawing has a scale of ½ in for 10 ft. Find the length of the drawing for each actual length 1.) 35 ft
Homework Page 291 (1,2, 5-16) all
Ratios, Proportions, AND Similar Figures
Introduction Recognizing and using congruent and similar shapes can make calculations and design work easier. For instance, in the design at the corner,
Do Now True or false? 1. Some trapezoids are parallelograms.
Section 8.3 Similar Polygons
7-4A Similar Figures and Proportions Learning Objective: To determine whether two given figures are similar, and to use similarity to find missing lengths.
2-8 Proportions and Similar Figures
Congruence and Similarity
Pre-Algebra 7-7 Scale Drawings HW: Page 370 #1-6 and #21-26.
Scale Drawings & Scale Models
1-9 applications of proportions
Math Similar Figures.
Evaluating Algebraic Expressions 5-5 Similar Figures Preparation for MG1.2 Construct and read drawings and models made to scale. California Standards.
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:
Similar Triangles. Similar triangles have the same shape, but not necessarily the same size. Two main tests for similarity: 1)If the angles of 1 triangle.
7-2 Similar Polygons.
WARM UP: Write the ratio of the first measurement to the second measurement. Length of car: 14 ft. 10 in, Length of model car: 8 in. There are 238 juniors.
7.2 Similar Polygons Similar figures – have the same shape but not necessarily the same size. You can abbreviate is similar to with the symbol ~ . Two.
Extension 3.6 Proportions and Similar Figures A.What do you know about similar triangles and congruent triangles? B.Definitions 1.Similar triangles – have.
Chapter 7 Vocab Review. 1. Write the generic formula (proportion) for geometric mean (x) of two positive numbers a & b.
7-2 Similar Polygons. Similar Figures: have the same shape but not necessarily the same size. You can abbreviate is similar to with the symbol ~
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