Questions and Answers
What is a point?
An exact location in space
What is a line?
A straight path of points that goes on and on in two directions
What is a line segment?
A part of a line that has two endpoints
What is a ray?
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What is an angle?
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What is a vertex?
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What is a right angle?
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What is an acute angle?
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What is an obtuse angle?
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What are parallel lines?
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What are intersecting lines?
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What are perpendicular lines?
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Study Notes
Points, Lines, and Angles
- Point: Defines an exact location in space, often represented by a dot.
- Line: A straight path extending infinitely in two opposite directions, composed of infinite points.
- Line Segment: A portion of a line that has two distinct endpoints, unlike a full line.
- Ray: A part of a line that starts at an endpoint and extends infinitely in one direction.
Angles
- Angle: Created when two rays share a common endpoint, known as the vertex.
- Vertex: The intersection point of two rays or the meeting point of polygon sides and edges in a solid figure.
Types of Angles
- Right Angle: Measures exactly 90 degrees, forming a square corner.
- Acute Angle: Measures less than 90 degrees, appearing sharp or narrow.
- Obtuse Angle: Measures more than 90 degrees, appearing wider than a right angle.
Line Relationships
- Parallel Lines: Never intersect in a plane, maintaining a constant distance apart.
- Intersecting Lines: Two or more lines that cross at a single point.
- Perpendicular Lines: Intersect at right angles, creating four 90-degree angles at the point of intersection.
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Description
Explore the fundamental concepts of lines, line segments, rays, and angles through this set of flashcards. Each card provides a clear definition and explanation of key geometry terms essential for a solid understanding of the subject. Perfect for students looking to reinforce their knowledge in geometry.