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Linear Measurements. Section 1.3. Line Segment. Is a part of a line that consists of two points, called endpoints, and all the points between. Symbolized by:
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Linear Measurements Section 1.3
Line Segment • Is a part of a line that consists of two points, called endpoints, and all the points between. • Symbolized by: • Distance: The distance between the points A and B written as AB is the absolute value of the difference of the coordinates of x1 and x2. Denoted: AB = |x2 – x1| Name of Points A B x1 x2 Coordinates
Example 1 What is UV? What is TV? What is US? What is ST?
Segment addition Postulate (on vocabulary sheet) • If B is between A and C, then AB + BC = AC. • If AB + BC = AC, Then B is between A and C. A B C
Example 4 99 miles Bismarck Dickenson Fargo 289 miles Find the distance from Bismarck to Fargo.
Example 5: 380 miles 360 miles Lubbick Tulsa St. Louis What is the distance from Lubbick to St. Louis?
36 F G H Example 6 Use the diagram to Find GH Example 7 Find y, then find PQ and QR. 21 3y+1 Q P R 2y 21
Example 8: Solve for x, then find UT and TS 5x - 3 7x U T S 45
Congruent Segments (vocab.sheet) • Line segments that have the same length / measure. • Ex: A B D C A = B Equal A B Congruent
Example 9: Find X and ST if S is between R and T • RS = 12, ST = 2x, RT = 34 • RS = 16, ST = 2x, RT = 5x + 10