Undefined Terms in Geometry

I am an object that represents one specific location in space. What am I?

• point

• line

• segment

• plane

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CCSS.HSG.CO.A.1

Points P and Q lie in plane A.  How many lines contain P and Q?

• 1.  Line PQ

• 2. Lines PQ and QP

• 3. The 2 lines PQ and QP plus another line that does not lie in plane A.

•  $\infty$  . We can't name them all!

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CCSS.HSG.CO.A.1

If a plane and a line intersect, their intersection will be a ________.

• Point

• Line

• Plane

• Segment

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CCSS.HSG.CO.A.1

Name two planes that contain line QP.

• Planes PSR, QNM

• Planes SPL, QRM

• Planes NML, QPR

• Planes PRQ, SLP

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CCSS.HSG.CO.A.1

Points X and Y line in both plane P and plane Q. What object defines that intersection of the two planes?

• Line XY

• Segment XY

• Plane P

• All of 3-dimensional space

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CCSS.HSG.CO.A.1

How many point are required to name a specific plane

• 3

• 2

• $\infty$

• 1

• 0

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CCSS.HSG.CO.A.1

Points that define a plane must have what property?

• Non-collinearity

• Collinearity

• Coplanarity

• Non-coplanarity

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CCSS.HSG.CO.A.1

How many points does a line segment contain?

• $\infty$

• 2

• 3

• some large number

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CCSS.HSG.CO.A.1

Opposite rays are rays that share an endpoint and point in opposite directions. Both rays together form a(n) __________.

• Line

• Plane

• Intersection point

• Acute angle

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CCSS.HSG.CO.A.1

Name a point that is coplanar with line DF but not collinear

• G

• H

• E

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CCSS.HSG.CO.A.1