Linear Measure Line Segment - A measurable part of a line that consists of two points, called the endpoints, and all the points between them. A segment.

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Presentation transcript:

Linear Measure Line Segment - A measurable part of a line that consists of two points, called the endpoints, and all the points between them. A segment with endpoints S and T can be written as ST or TS. The length or measure of the segment is written as ST or TS.

Linear Measure Betweenness - A point is between two other points on the same line if and only if its coordinate is between their coordinates. (A-B-C if and only if a<b<c or a>b>c) Given three collinear points X, Y, and Z, if Y is between X and Z, then XY + YZ = XZ.

Linear Measure Congruent () – Segments that have the same length. When superimposed, things that are congruent coincide exactly. In figures, items that are congruent are given the same markings. Constructions – Drawings made with a straightedge and compass.

a. Find the length of . Answer: in. Example 2-2c

b. Find the length of . Answer: in. Example 2-2d

a. Find SE. Answer: in. Example 2-4f

b. Find ON. Answer: 3.7 cm Example 2-4g

c. Find a and AB if AB 4a + 10, BC 3a – 5, and AC 19. Answer: Example 2-4h