Geometry Vocabulary: Points, Lines, and Planes

This video tutorial covers the basics of geometry, including definitions and examples of points, lines, and planes. It explains collinear and coplanar points, line segments, and the distance formula. The tutorial also discusses the midpoint formula, segment bisectors, and various types of angles, such as right, acute, and obtuse angles. Additionally, it covers congruent angles, complementary and supplementary angles, and concludes with a review of the key concepts.

What is a point in geometry?

• A location with no size or shape

• A location with size and shape

• A line with thickness

• A plane with width

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CCSS.HSG.CO.A.1

What is a plane in geometry?

• A line with thickness

• A point with size

• A three-dimensional object

• A flat surface made up of points extending indefinitely

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CCSS.HSG.CO.A.1

What does collinear mean?

• Points that form a triangle

• Points that lie on different planes

• Points that lie on the same line

• Points that lie on different lines

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CCSS.HSG.CO.A.1

What is the distance formula used for?

• Finding the midpoint between two points

• Finding the distance between two points on a coordinate plane

• Finding the volume of a cube

• Finding the area of a triangle

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CCSS.HSG.GPE.B.7

What are congruent segments?

• Segments with the same length

• Segments with different lengths

• Segments that form a right angle

• Segments that are parallel

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CCSS.8.G.A.2

What is a segment bisector?

• A line that is parallel to a segment

• A line that intersects a segment at any point

• A line that intersects a segment at its midpoint

• A line that is perpendicular to a segment

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CCSS.HSG.CO.A.1

What is a ray in geometry?

• A line segment with two endpoints

• A line that extends indefinitely in both directions

• A point with no size or shape

• A line that extends indefinitely in one direction

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CCSS.4.G.A.1

What is an acute angle?

• An angle with a degree measure of 180 degrees

• An angle with a degree measure greater than 90 degrees

• An angle with a degree measure of 90 degrees

• An angle with a degree measure less than 90 degrees

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CCSS.4.G.A.1

What are complementary angles?

• Two angles that are vertical

• Two angles with measures that have a sum of 180 degrees

• Two angles that are adjacent

• Two angles with measures that have a sum of 90 degrees

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CCSS.7.G.B.5

What does it mean for two lines to be perpendicular?

• They intersect at a 45-degree angle

• They are parallel to each other

• They do not intersect

• They intersect at a 90-degree angle

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CCSS.HSG.CO.A.1