Podcast
Questions and Answers
Parallel lines always intersect.
Parallel lines always intersect.
False (B)
Which of the following is NOT a type of angle?
Which of the following is NOT a type of angle?
- Acute angle
- Scalene angle (correct)
- Right angle
- Obtuse angle
What is the name of the point where two rays meet to form an angle?
What is the name of the point where two rays meet to form an angle?
Vertex
Two angles that add up to 90 degrees are called ______ angles.
Two angles that add up to 90 degrees are called ______ angles.
Match the following terms with their definitions:
Match the following terms with their definitions:
Flashcards
Percentage formula
Percentage formula
Base multiplied by rate gives the percentage.
Collinear points
Collinear points
Points that lie on the same straight line.
Perpendicular lines
Perpendicular lines
Lines that intersect to form right angles (90°).
Acute angle
Acute angle
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Vertical angles
Vertical angles
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Study Notes
Percentage and Rate Formulas
- Percentage formula: base × rate
- Rate formula: percentage ÷ base
Geometry Fundamentals
Points
- Point: A specific location in space.
- Collinear points: Points on the same line.
- Non-collinear points: Points not on the same line.
- Coplanar points: Points on the same plane.
- Non-coplanar points: Points not on the same plane.
Lines
- Line: Extends infinitely in both directions.
- Line segment: A portion of a line with two endpoints.
- Ray: A portion of a line with one endpoint and extends infinitely in one direction.
- Parallel lines: Lines that do not intersect.
- Perpendicular lines: Lines that intersect at a 90° angle.
- Intersecting lines: Lines that meet at a point.
- Concurrent lines: Three or more lines that meet at a single point.
- Skew lines: Lines that are on different planes and do not intersect.
Angles
- Angle: Formed by two rays sharing a common endpoint (vertex).
- Vertex: The common endpoint of the two rays forming an angle.
- Protractor: A tool used to measure angles.
- Degree: A unit for measuring angles.
- Acute angle: Measures less than 90°.
- Right angle: Measures exactly 90°.
- Obtuse angle: Measures more than 90° but less than 180°.
- Straight angle: Measures exactly 180°.
- Complete angle: Measures exactly 360°.
- Complementary angles: Two angles that sum to 90°.
- Supplementary angles: Two angles that sum to 180°.
- Adjacent angles: Angles that share a common vertex and a common side.
- Linear pair: Two adjacent angles that form a straight line (180°).
- Vertical angles: A pair of non-adjacent angles formed by intersecting lines.
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