Lines and Segments SY 2015-2016 Source: Geometry (2007) by Ron Larson et al.

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Presentation transcript:

Lines and Segments SY Source: Geometry (2007) by Ron Larson et al

Definitions O Line Segment: is a subset of a line that contains two points (called the endpoints) and all points in between them.

Definitions O Between-ness

Postulate

Try this! Which segments are coplanar? Is AB + BC = AC ? Why or why not?

Try this! Solve for the unknowns.

Try this! Solve for BD if AB = BC, AC = DC, and AD = 12.

Try this! O Always, Sometimes, Never. If CA = AT, then A is the midpoint of CT.

Try this! Solve. Points A, B, C, D, E are collinear points. Point B is the midpoint of AE. Point D is the midpoint of BE. C is between points A & B. If BD = 3cm & CE = 7cm, then how long is AC?

Try this! True or False. Point D is a midpoint in the figure. C D A B

Take Note!

Definitions

Try this! Solve for the unknowns.

Try this! Solve for the unknowns.