A simple live situation bseed introduction to POINTS, RAYS, LINES andLINE SEGMENTs

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Slide1:

Points. Lines and Angles By MASTER

Slide2:

Point and Rays point rays What in the World Points and Rays look like? O

Points, Rays and Lines:

Points, Rays and Lines What in the World Points, Rays and Lines look like? Points Rays Line A B Line Segments C D E F

Points, Rays and Lines:

Points, Rays and Lines What in the World Horizontal, Inclined, Vertical lines and Perpendicular Lines look like? Points A B Horizontal Line Inclined/Slanting Lines Vertical Lines Perpendicular Lines

Points, Rays and Lines:

Points, Rays and Lines What in the World Lines meeting at a Point and Parallel Lines look like? Common Point Lines meeting at a point A B Horizontal Line Perpendicular Lines Vertical Lines Parallel Lines

Points, Rays and Lines:

Points, Rays and Lines What in the World Lines meeting at a Point and Parallel Lines look like? A B

Objectives:

Objectives By the end of the unit, students will be able to identify points, rays, lines, and line segments name points, rays, lines, and line segments identify horizontal, slanting or inclined lines , and vertical lines describe intersecting and parallel lines

Objectives (continued):

identify angle, vertex and arms name angle, vertex and arms Identify acute, right , straight obtuse and reflex angles, describe adjacent and vertically opposite angles Identify angles made by a transversal cutting parallel lines Objectives (continued)

Objectives (continued):

name angles made by a transversal cutting parallel lines :exterior angles on the same side, interior angles on the same side of the transversal, alternate angles Objectives (continued)

Summary:

A point has position but no magnitude A ray starts at a point (one end point) and extends to infinity in one direction. C A Summary A B Two opposite rays starting at a point make a straight line, labeled as or . AB AB

Slide11:

A line segment is a part of a line that has two end points . The two end points of the line segment are used to name the line segment. This line segment is called segment XY or YX . X Y

Intersecting Lines:

Intersecting Lines Lines that meet or cross each other are called intersecting lines intersects A B C D AB AB

Parallel Lines:

Parallel lines are always the same distance apart. They never meet. AB ll CD A B C D Parallel Lines AB AB

Perpendicular Lines:

Perpendicular Lines A D C B AB CD Lines that meet or cross each other to form right angles are called perpendicular lines .

Slide15:

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