Points, Lines, and Planes

Locations, infinite lines, flat planes, and point relationships.

Lesson 1 of 43 parts Practice Flashcards

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Point

Objective: Identify and name a point.

A point specifies an exact location and has no dimension. Name it with a capital letter, such as A.

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Point

Objective: Identify and name a point.

A point specifies an exact location and has no dimension. Name it with a capital letter, such as A.

Line

Objective: Identify a line and use two points to name it.

A line extends without end in both directions. Two distinct points determine exactly one line.

A straight line extending away in opposite directions through points A and B.

Formulas

$\overleftrightarrow{AB}$

Plane

Objective: Identify a plane and distinguish collinear from coplanar points.

A plane is a flat surface extending without end in every direction within it. Three non-collinear points determine exactly one plane. Collinear points lie on one line; coplanar points lie on one plane.

A slanted parallelogram representing plane M with three noncollinear points A, B, and C.

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