Points, Lines, and Planes

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# Points, Lines, and Planes - PowerPoint PPT Presentation

Points, Lines, and Planes. A point is an exact location in space. You are here. A true point has no length, no width, and no height. In fact, you cannot see a true point. A point is named by a letter. Point P. P.

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Presentation Transcript

### Points, Lines, and Planes

A true point has no length, no width, and no height.

In fact, you cannot see a true point.

Lines are 1-dimensional objects that have only length. Lines continue forever in both directions.
A ray of light has a starting point (like the sun) and continues forever in the same direction.

A skewer raises your “dinner” off the surface of the grill. The skewer does not intersect the grill, and the skewer is not parallel to the grill.

Lines can be…

intersecting

skew

parallel

perpendicular

90º

A plane

is a flat

surface that has

length & width

but no height.

Planes can

intersect.

Planes can

be perpendicular.

Planes can

be parallel.

Planes can be…

intersecting

parallel

perpendicular