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Geometry

Geometry. 1.2 Linear Measure. Line segment – part of a line with two endpoints and all points between them __ The measure of AB is always written as AB.

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Geometry

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  1. Geometry 1.2 Linear Measure

  2. Line segment – part of a line with two endpoints and all points between them __ • The measure of AB is always written as AB.

  3. Betweenness of points – for any 2 points there is another point between them • Point M is between points P and Q if and only if P, Q, and M are collinear and PM + MQ = PQ

  4. Congruent segments – have the same measure

  5. Constructions • Constructions are drawings of geometric figures made without measuring tools. • Usually made by only using a straight edge, compass, and pencil. • Sketches are made with no tools.

  6. Homework • Page 18: 1-8 all, 10-32 evens, 46-54 evens

  7. Section 1.3 Distance and Midpoint

  8. Distance • On the number line, distance between two points is the absolute value of the difference between their coordinates. • d =

  9. In the coordinate plane, distance is found by using: • _______________ • d= √ (x2-x1)2 + (y2-y1)2

  10. Midpoints • This is basically the average between two points. • M =

  11. Segment bisector – any segment, line, or plane that intersects a segment at its midpoint

  12. Homework • Page 30: 7-12 all, 14-56 evens

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