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54 Cards in this Set
- Front
- Back
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Point
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A position in space that has no dimension
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Line
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A never ending straight path
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Ray
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(a line with) 1 endpoint
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Line Segment
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(a piece of a line with) 2 endpoints
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Intersecting Line
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2 lines that meet at 1 point
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Perpendicular Line
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Lines that meet to form a right angle
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Plane
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A flat surface that extends in all directions
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Parallel Lines
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Lines on the same plane that will never meet
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Skew Lines
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Lines not in the same plane that will never meet
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Right Angle
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90º
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Acute Angle
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>90º
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Angle
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A figure formed by 2 rays extending from 1 vertex
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Obtuse Angle
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<90º but >180º
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Straight Angle
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180º
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Reflex Angle
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<180º
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Adjacent Angles
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Angles that share a common vertex and a common ray
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Vertex
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A point in an angle where 2 rays meet
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Vertical Angle
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2 non-adjacent angles formed when 2 lines intersect
They are Congruent |
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Corresponding Angles
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Angles that match in position when a parallel lines are cut by a transversal
They are congruent |
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Alternate Interior Angles
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They are congruent
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Alternate Exterior Angle
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They are congruent
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Complementary Angles
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2 angles whose sum is 90º
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Supplementary Angles
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2 angles whose sum is 90º
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Transversal
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A line that intersects 2 angles
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Equilateral Triangle
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A triangle with all sides and angles congruent.
All angles 60º |
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Isosceles Triangle
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A triangle with at least 2 congruent sides
2 equal angles on the different sides are congruent |
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Scalene Triangle
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A triangle with no congruent sides
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Right Triangle
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A triangle with 1 right angle
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Obtuse Triangle
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A triangle with 1 obtuse angle
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Acute Angle
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A triangle with 3 acute angles
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Equilateral Triangle
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A triangle with all sides and angles congruent
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Polygon
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A many sided figure
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Triangle
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A three sided figure
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Quadrilateral
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A 4 sided figure
360º |
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Pentagon
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A 5 sided figure
540º |
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Hexagon
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A 6 sided figure
720º |
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Septagon
or Heptagon |
A 7 sided figure
900º |
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Octagon
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An 8 sided figure
1080º |
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Nonagon
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A 9 sided figure
1260º |
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Decagon
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A 10 sided figure
1440º |
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Dodecagon
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A 10 sided figure
1620º |
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A Regular Polygon
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A sides and angles the same
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Parallelogram
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A quadrilateral 2 pairs of parallel sides
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Rectangle
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A parallelogram with a right angle
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Rhombus
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A parallelogram congruent sides
There are no right angles |
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Square
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A special Rectangle
with congruent sides A Special Rhombus with 1 right Angle |
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Trapeziod
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A Quadrilateral with exactly 1 pair of parallel sides
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Kite
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Quadrilateral with 2 pairs of adjacent and congruent sides
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Circle
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A plane with all parts equidistant from a given point called the center
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Diameter
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A chord that passes the center of the circle
2 radius |
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Radius
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A line segment that connects the center and any point on the circle
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Central Angle
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An angle whose vertex is the center of the circle and whose rays contain the radii of of the circle
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Inscribe Angle
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an angle whose vertex lies on the circle and whose rays contain chords of the circle
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Intercepted Arc
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A piece of the circle between the two rays
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