# Geometry Final Exam

## Unlock all answers in this set

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point
a location that has neither shape nor size
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line
made up of points and has no thickness or width
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plane
a flat surface made up of points that extends infinitely in 4 directions
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collinear
points that lie on the same line
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coplanar
points that lie in the same plane
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intersection of two or more geometric figures
the set of points that they have in common
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the intersection of two lines
a point
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the intersection of two planes
a line
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space
a boundless, three-dimensional set of all points
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line segment
a measurable portion of a line, with two endpoints
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congruent segments
line segments that have the same measure
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congruent
having the same size and shape
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constructions
drawings of geometric figures created without the benefit of measuring tools, generally using only a pencil, straightedge, and compass
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midpoint of a line segment
the point halfway between the endpoints of the segment
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segment bisector
any segment, line or plane that intersects a segment at its midpoint
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ray
a part of a line, having one endpoint and extending indefinitely in one direction
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opposite rays
two collinear rays sharing a common endpoint
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angle
two noncollinear rays that have a common endpoint
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sides of an angle
the two noncollinear rays that make up an angle
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vertex of an angle
the common endpoint of the two rays of an angle
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degrees
the unit of measure for angles
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right angle
an angle that measures 90 degrees
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acute angle
an angle that measures between 0 and 90 degrees
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obtuse angle
an angle that measures between 90 and 180 degrees
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congruent angles
two angles that have the same measure
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angle bisector
a ray that divides an angle into two congruent angles
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two angles that lie in the same plane and have a common vertex and a common side, but no common interior points
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linear pair
a pair of adjacent angles with noncommon sides that are opposite rays
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vertical angles
two nonadjacent angles formed by two intersecting lines
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vertical angles are....
congruent
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complementary angles
two angles with measures that have a sum of 90 degrees
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supplementary angles
two angles with measures that have a sum of 180 degrees
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the angles in a linear pair are ....
supplementary
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lines, segments, or rays that form rights angles are...
perpendicular
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polygon
a closed figure formed by a finite number of coplanar segments called sides such that (1) the sides that have a common endpoint are noncollinear, and (2) each side intersects exactly two other sides at their endpoints
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vertex of a polygon
the vertex of an angle of a polygon
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concave polygon
a polygon that "turns inward"
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convex polygon
a polygon that does not "turn inward"
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triangle
polygon with 3 sides
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polygon with 4 sides
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pentagon
polygon with 5 sides
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hexagon
polygon with 6 sides
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heptagon
polygon with 7 sides
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octagon
polygon with 8 sides
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nonagon
polygon with 9 sides
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decagon
polygon with 10 sides
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hendecagon
polygon with 11 sides
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dodecagon
polygon with 12 sides
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n-gon
a polygon with an undetermined number of sides
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equilateral polygon
a polygon in which all sides are congruent
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equiangular polygon
a polygon in which all angles are congruent
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regular polygon
a polygon that is both equilateral and equiangular
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perimeter of a polygon
the sum of the lengths of the sides
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polyhedron
a solid with all flat surfaces that enclose a single region of space
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prism
a polyhedron with two parallel congruent bases connected by parallelogram faces
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pyramid
a polyhedron that has a polygonal base and three or more triangular faces that meet at a common vertex
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cylinder
a solid with congruent parallel circular bases connected by a curved surface
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cone
a solid with a circular base connected by a curved surface to a single vertex
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sphere
a set of points in space that are equidistant from a given point; it has no faces, edges, or vertices
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negation of a statement
the opposite meaning, with the opposite truth value
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compound statement
two or more statements joined by the word "and" or "or"
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the hypothesis of an if-then statement
the "if" phrase
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the conclusion of an if-then statement
the "then" phrase
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Through any two points, there is exactly one _____
line
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Through any three noncollinear points, there is exactly one ___
plane
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A line contains at least ______ points
two
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If two lines intersect, then their intersection is exactly one_____
point
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If two planes intersect, then their intersection is a ______
line
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The Midpoint theorem says that if "M" is the midpoint of line segment AB, then segment AM is congruent to _____
segment MB
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If a = b, then a + c = b + c
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Subtraction Property of Equality
If a = b, then a - c = b - c
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Multiplication Property of Equality
If a = b, then ac = bc
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Reflexive Property of Equality
a = a
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Symmetric Property of Equality
If a = b, then b = a
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Transitive Property of Equality
If a = b and b = c, then a = c
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Parallel lines