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Math > Geometry Terms > Flashcards

Geometry Terms Flashcards

1
Q

What is a Point?

A

Definition: That which has no part.

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2
Q

What is a line?

A

Definition: A line is a widthless length.

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3
Q

What is a plane?

A

Definition: Just width and Length.

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4
Q

What is a line segment?

A

Definition: Part of a line with two endpoints.

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5
Q

What is a ray.

A

Definition: A portion of a line with one endpoint that extends forever in the other direction.

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6
Q

What is an angle?

A

Definition: Formed by two rays with a common endpoint.

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7
Q

What is a vertex?

A

Definition: Common endpoint in an angle.

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8
Q

What is a Right angle?

A

Definition: An angle equal to 90º.

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9
Q

What is an acute angle?

A

Definition: An angle less than 90º.

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10
Q

What is an obtuse angle?

A

Definition: An angle greater that 90º

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11
Q

What is a strait angle?

A

Definition: An angle equal to 180º

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12
Q

What is a complementary angle?

A

Definition: Two angles whose sum is 90º

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13
Q

What is a supplementary angle?

A

Definition: Two angles whose sum is 180º

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14
Q

What does congruent mean?

A

Definition: 2 equal shapes (line segments and angles)

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15
Q

What are perpendicular lines?

A

Definition: Two lines or rays that meet at right angles.

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16
Q

What are parallel lines?

A

Definition: Coplanar lines that never meet.

17
Q

What are skew lines?

A

Definition: Two non-coplanar lines that do not intersect.

18
Q

What are adjacent angles?

A

Definition: Two angles that are next to each other. The have a common angle and a common side but no common interior points.

19
Q

What are vertical angles?

A

Definition: Opposite angles formed by two intersecting lines.

20
Q

What is a transversal line?

A

Definition: A line that intersects parallel lines.

21
Q

What are corresponding angles?

A

Definition: Angles that are formed by the same transversal lines.

22
Q

What is a polygon?

A

Definition: Many-sided closed planar figure.

23
Q

What is a regular polygon?

A

Definition: All side lengths and angles are congruent.

24
Q

What is a triangle?

A

Definition: 3-sided polygon.

25
Q

What is a quadrilateral?

A

Definition: 4-sided polygon.

Math (4 decks)

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