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29 Cards in this Set
- Front
- Back
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3 Building Blocks of Geometry
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Points, Lines, Planes
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Point
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no side, only location
Ex: .P |
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Line
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straight arrangements of points,
extends forever |
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Plane
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flat surface, extending forever
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Colinear/Coplanar Points
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two or more points that line on the same line/plane.
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Congruent
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Two geometric figures are congurent if and only if they are identical in shape and size.
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Conditional/If-Then Statement
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A statement that can be expressed as an if-then statement.
Ex: IF a polygon is a hexagon, THEN it has exactly 6 sides. |
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Converse Statement
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The statement formed by reversing the two parts of a conditional statement.
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Biconditional/ If-Then Statement
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A statement in which a conditional statement and it's converse are both true.
Ex:An angle is a right angle IF AND ONLY IF its measure is 90. |
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Right/Acute/Obtuse Angle
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Angle whos measure is 90
Angle whos measure is less then 90. Angle whose mesure is 180 |
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Angle bisector
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a ray that had an end point on the vertex of an angle and that divides the angle into two angles of equal measure.
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Parallel
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two lines on the same plane that never intersect
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Complementary Angles
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angles that are 90 when added together
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Supplementary Angles
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two angles that if added together = 180.
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Vertical Angles
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angles that are across from each other that have the same measure.
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Diagonals of a Polygon
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When a line from the point of a polygon connects diagonally to the other point.
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Equilateral Polygons
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a polygon whose sides are all congruent
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Equiangular
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A polygon whose angles are equal in measure
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Regular
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Polygon that is both equilateral and equiangular
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Scalene Triangle
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When all 3 sides of the triangle are different lengths.
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Isoceles Triangle
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When 2 or more sides are equal to each other
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Medians of Triangle
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A segment connecting the midpoint of aside to the opposite vertex.
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Altitude of Triangle
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A perpendicular segment from a vertex to the opposite side.
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Trapezoid
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a quadrilateral with exactly one pair of parallel sides.
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Kite
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a quadrilateral with exactly 2 paris of distinct congruent sides.
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Parallelogram
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A quadrilateral in which both parits of opposite sides are parallel.
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Rhombus
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an equilateral parallelogram
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Square
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an equiangular rhombus or an equilateral rectangle.
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Rectangle
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an equiangular parallelogram.
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