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 Flashcards Matching Hangman Crossword Type In Quiz Test StudyStack Study Table Bug Match Hungry Bug Unscramble Chopped Targets

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# Geometry Review Clif

parallel lines that do not intersect have the same slope
perpendicular lines lines that intersect to form right angles
alternate interior angles two non-adjacent angles that lie on the opposite sides of a transversal between two lines that the transversal intersects (a description of the location of the angles);
arc part of a circle contained between two points located on the circle
arc length the length in linear measure of an arc of a circle; the product of the ratio of the arc measure and 360º and the circumference of the circle
bisector (of a line segment) a line, segment, ray, or plane that intersects a segment at its midpoint
bisector (of an angle) a line or ray that divides the angle into two congruent angles
central angle an angle whose vertex is the center of the circle and whose sides are radii of the circle.
chord a line segment whose endpoints lie on the circle
circle all points lying in one plane that are equidistant from a fixed point (the center)
conditional statement A statement that can be written in the form “If p, then q.” p is the hypothesis and q is the conclusion. Symbolically, if p, then q can be written as p-->q.
contrapositive the hypothesis and conclusion are both reversed and negated. “If p, then q.” becomes “If not q, then not p.”
converse the hypothesis and conclusion are reversed. “If p, then q.” becomes “If q, then p.”
convex polygon a polygon in which no diagonal contains points outside of the polygon.
corresponding angles (parallel lines) two angles that lie on the same side of a transversal, in corresponding positions with respect to the two lines that the transversal intersects.
corresponding angles (in polygons) angles that are in the same position in different plane figures
cosine a trigonometric function abbreviated cos In a right triangle, the ratio of the length of the leg adjacent to the reference angle to the length of the hypotenuse
exterior angle of a polygon an angle formed when one side of a polygon is extended; the angle is adjacent to an interior angle of the polygon
Law of Syllogism From (p implies q) and (q implies r) we conclude (p implies r).
Law of Detachment p and (p implies q) we conclude q.
linear pair two adjacent angles whose non-common sides are opposite rays; the sum of these angles is 180
major arc an arc that measures 180º or more
midpoint the point halfway between the endpoints of a segment divides a segment into two congruent segments
minor arc an arc that measures less than 180º
orthogonal drawings the two dimensional top view, front view, and right-side view of a three-dimensional drawing
platonic solids the five regular polyhedra: tetrahedron, hexahedron, octahedron, dodecahedron, or icosahedron
proof a valid argument in which all of the premises are true
regular polygon a polygon that has congruent sides and congruent angles
same-side interior angles (consecutive angles) two angles that lie on the same side of a transversal and between the lines cut by the transversal, in corresponding positions with respect to the two lines that the transversal intersects.
scale the ratio of any length in a scale drawing to the corresponding actual length; the lengths may be in different units
secant a line, ray, or segment that intersects a circle at two points (i.e. that contains a chord)
sine a trigonometric function abbreviated sin. In a right triangle, the ratio of the length of the leg opposite the reference angle to the length of the hypotenuse.
skew lines non-coplanar lines that do not intersect
tangent (to a circle) a line that intersects a circle in exactly one point
tangent (trigonometric function) a trigonometric function abbreviated tan; In a right triangle, the ratio of the length of the leg opposite the reference angle to the length of the leg adjacent to the given angle.
transversal a line that intersects two or more other lines in the same plane at different points
Created by: kitty757