Exploring Geometry Vocabulary

This video tutorial introduces the basic concepts of points, lines, and planes in geometry. It covers the definitions and properties of points, lines, and planes, including collinear and non-collinear points, coplanar and non-coplanar points, and how lines and planes intersect. The tutorial also explains rays, opposite rays, and line segments, providing foundational vocabulary and concepts necessary for understanding geometry.

What is a point in geometry?

• A location with no size or shape

• A plane with boundaries

• A location with size and shape

• A line with thickness

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How is a line named in geometry?

• By a capital letter

• By any two points on the line or a lowercase script letter

• By a single point on the line

• By any three points on the line

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CCSS.HSG.CO.A.1

What are collinear points?

• Points that lie on the same plane

• Points that do not lie on the same line

• Points that form a triangle

• Points that lie on the same line

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How is a plane defined in geometry?

• A flat surface made up of points that extends indefinitely in all directions

• A line with no thickness or width

• A point with no size or shape

• A segment with two endpoints

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CCSS.HSG.CO.A.1

What makes a set of points non-coplanar?

• All points lie on the same plane

• At least one point does not lie on the same plane

• At least one point does not lie on the same line

• All points lie on the same line

What is the intersection of two lines?

• A point

• A segment

• A plane

• A ray

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What is a ray in geometry?

• A plane with three points

• A segment with two endpoints

• A line that starts at an endpoint and goes off in a particular direction to infinity

• A line with two endpoints

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CCSS.4.G.A.1

What are opposite rays?

• Two rays that start from a common point and go in the same direction

• Two rays that start from a common point and go in opposite directions

• Two rays that form a line segment

• Two rays that start from different points

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CCSS.4.G.A.1

What is a line segment?

• A point with no size or shape

• A plane with three points

• A line that extends indefinitely in one direction

• A part of a line that is bounded by two distinct points

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CCSS.HSG.CO.A.1

What is the process of showing a theorem to be correct called?

• Postulate

• Definition

• Proof

• Axiom