Section 1-1:Points, Lines & Planes

How many points determine a line?

• 1

• 2

• 3

• 4

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What is the minimum number of points needed for for collinear points?

• 1

• 2

• 3

• 4

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How many non-collinear points are needed to define a unique plane?

• 1

• 2

• 3

• 4

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The _____________ formula can be used to determine if points are collinear.

• mid-point

• slope

• distance

• quadratic

The intersection of two planes is a ___________ .

• point

• vertex

• segment or line

• plane

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The intersection of two lines is a_____________.

• line

• point

• segment

• plane

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Parallel lines are always _______________.

• coplanar

• collinear

• skew

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Two non-coplanar lines that do not intersect are called __________ lines.

• parallel

• skew

• obligue

• perpendicular

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Co-planar lines that intersect in non-perpendicular fashion are called _____________ lines.

• perpendicular

• parallel

• skew

• oblique

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Co-planar lines that intersect to form 90 degree angles are called _____________ lines.

• parallel

• oblique

• perpendicular

• non-coplanar

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