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Final Exam Geo Vocab

Vocab for final exam

Lines that do not intersect and do not lie in the same plane SKEW
An angle whose measure is between 90 and 180. OBTUSE ANGLE
An angle whose measure is exactly 90 degrees. RIGHT ANGLE
An angle whose measure is between 0 and 90 degrees. ACUTE ANGLE
A transformation where the image and preimage are congruent. ISOMETRY
Lines that intersect at right angles. PERPENDICULAR LINES
Points that lie on the same line. Collinear Points
Points that lie in the same plane. Coplanar Points
A segment, line or ray that bisects another segment at right angles to its' midpoint Perpendicular bisector
A section of a line consisting of endpoints and each end and all points in between. Segment
A line consisting of one endpoint and all the points of the line on one side of the endpoint. Ray
The point which lies at the middle of the line. Midpoint
If 1/3 TR = UW, then TR = 3 UW Multiplication property
If 2(x + 5), then 2x + 10 Distribution property
If 2x - 5 = 10, then 2x = 15. Addition property
If 5x + 6 = 21, then 5x = 15. Subtraction property
If 12x = 84, then x = 7 Division property
Any shape whose angles are congruent Equiangular polygon
Any shape whose angles are congruent and whose sides have the same lengths. Regular polygon
Any shape with congruent sides. Equilateral
2 coplanar angles that have a common side and common vertex but no common interior points. Adjacent angles
A line that intersects 2 coplanar lines in 2 points. transversal
A ray that divides an angle into 2 congruent angles. Angle bisector
A series of points that extend in 2 directions from a midpoint. A line
A parallelogram with 4 congruent sides. Rhombus
A parallelogram with 4 congruent sides and 4 right angles. Square
A parallelogram with 4 right angles. Rectangle
A quadrilateral with congruent adjacent sides and no opposite sides congruent Kite
A quadrilateral with 2 pairs of opposite parallel sides. Parallelogram
Lines in the same plane that do not intersect. Parallel Lines
A segment that connects the midpoints of opposite sides of a triangle or trapezoid. Midsegment
2 angles whose sum is 90. Complementary angles
2 angles whose sum is 180. Supplementary angles
If you live in Cheyenne, then you live in Wyoming. If you live in Wyoming, then you live in Cheyenne. Converse
If a figure is a square, then it is a parallelogram. If a figure is not a square, then it is not a parallelogram. Inverse
If a figure is a triangle, then it is a polygon. If a figure is not a polygon, then it is not a triangle. Contrapositive
The combination of a conditional statement and its converse. Biconditional
A particular example or instance of a statement that makes the statement false. Counterexample
2 angles whose sides form two pairs of opposite rays Vertical angles
A triangle with no sides congruent Scalene triangle
A segment that has as its endpoints a vertex of the triangle and the midpoint of the opposite side. Median
The perpendicular segment from a vertex to the line containing the side opposite the vertex. Altitude
A quadrilateral with exactly one pair of parallel sides. Trapezoid
Created by: Robin Lamb