Basic Geometric Terms Flashcards

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Questions and Answers

What is a straight angle?

An angle that measures 90 degrees

An angle that measures 45 degrees

An angle that measures 360 degrees

An angle that measures 180 degrees (correct)

What does adjacent mean?

Two angles that are next to each other

What is a horizontal line?

A line that goes from side to side

What does vertical refer to in geometry?

A line that goes up and down Signup and view all the answers

What is a ray in geometry?

A straight path that has a beginning but not an ending Signup and view all the answers

What is a protractor used for?

A math tool used for measuring or drawing angles Signup and view all the answers

What does midpoint refer to?

The middle point Signup and view all the answers

What is an angle?

Two rays that have a common end point Signup and view all the answers

What is a reflex angle?

An angle that measures more than 180 degrees but less than 360 degrees Signup and view all the answers

What does perpendicular mean?

Two lines that form right angles where they intersect Signup and view all the answers

What is a segment in geometry?

A straight path that has a beginning and an ending Signup and view all the answers

What is an acute angle?

An angle that measures more than zero degrees but less than 90 degrees Signup and view all the answers

What is the intersection of lines?

Where lines cross over a common point Signup and view all the answers

What does finite mean?

Something that has an end Signup and view all the answers

What are vertical angles?

Angles that are opposite each other when two lines intersect Signup and view all the answers

What are supplementary angles?

Two angles whose sum is 180 degrees Signup and view all the answers

What are complementary angles?

Two angles whose sum is 90 degrees Signup and view all the answers

What does parallel mean in geometry?

Two lines that never cross or touch Signup and view all the answers

What does infinite mean?

Never ending Signup and view all the answers

What is an obtuse angle?

An angle that measures more than 90 degrees but less than 180 degrees Signup and view all the answers

What is a line?

A straight path that goes on infinitely in either direction Signup and view all the answers

What is a vertex in geometry?

A point where two angles begin or meet Signup and view all the answers

What does symmetry refer to?

When a figure is folded in half and the two halves match perfectly Signup and view all the answers

What is a right angle?

An angle that is 1/4 of a circle Signup and view all the answers

What is a degree in geometry?

A unit used to measure an angle Signup and view all the answers

Study Notes

Basic Geometric Terms

Straight Angle: Measures exactly 180 degrees.
Adjacent Angles: Share a common side and vertex, located next to each other.
Horizontal Line: Extends side to side, parallel to the horizon.
Vertical Line: Extends up and down, perpendicular to horizontal lines.
Ray: A straight path starting at a point and extending infinitely in one direction.
Protractor: A mathematical instrument used for measuring angles in degrees.
Midpoint: The exact middle point of a line segment.
Angle: Formed by two rays meeting at a common endpoint, known as the vertex.
Reflex Angle: Measures more than 180 degrees but less than 360 degrees.
Perpendicular Lines: Two lines that intersect to form right angles (90 degrees).
Segment: A portion of a line with two defined endpoints.
Acute Angle: Measures greater than 0 degrees but less than 90 degrees.
Intersection: The point where two lines cross each other.
Finite: Describes a line segment or shape that has a specific endpoint.
Vertical Angles: Angles opposite each other at the intersection of two lines.
Supplementary Angles: When two angles sum up to 180 degrees.
Complementary Angles: When two angles sum up to 90 degrees.
Parallel Lines: Lines that never intersect and remain equidistant apart.
Infinite: Describes a line or path that continues endlessly in both directions.
Obtuse Angle: Measures more than 90 degrees but less than 180 degrees.
Line: A straight path that extends infinitely in both directions.
Vertex: The point at which two rays or line segments meet to form an angle.
Symmetry: A property where one half of a figure is a mirror image of the other half when folded.
Right Angle: An angle that measures exactly 90 degrees, equivalent to one quarter of a circle.
Degree: A unit of measurement used to quantify angles.

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Description

This quiz focuses on fundamental geometric terms and definitions. It covers essential concepts such as angles, lines, and rays. Perfect for students looking to enhance their understanding of geometry basics.