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Geo Terms

Acute Triangle A triangle for which all interior angles measure less than 90 degrees
Alternate Exterior Angles Exterior angles on alternate sides of the transversal
Alternate Interior Angles Interior angles on alternate sides of the transversal
Altitude of Triangle Straight line through a vertex and perpendicular to a line containing the base of a triangle
Angle Bisector Theorem (ABT) Concerning the lengths of the two segments that a triangle's side is divided into by a line that bisects the opposite angle & equates their lengths to the lengths of the other sides of the triangle
ABT Converse If a point is equidistant from the sides of an angle, then it is on the angle bisector
Angle Formed by two rays, called the sides of the angle, sharing a common endpoint, called the vertex of the angle
Arc A closed segment of a differential curve in the two-dimensional plane
Area Any particular extent of space or surface
Bisector A line that divides something into two equal parts
Center of a Polygon In a rotation, the point that does not move. The rest of the plane rotates around this fixed point
Centroid of a Triangle The point where the three medians of the triangle intersect
Circumcenter of a triangle The point where the three perpendicular bisectors of a triangle meet
Circumference A complete circular arc; also the distance around the outside of a circle
Circumscribed A geometric figure that is drawn around another geometric figure as to touch all its vertices
Combination A way of selecting several things out of a larger group, where order does not matter
Common Parts Informational language that describes similarities, differences, parts, and other attributes of two and three dimensional shapes, in different sizes and orentation
Compass An instrument for drawing circles and arcs and measuring distances between points, consisting of two arms linked by a moving joint
Compliment Probability In the probability theory, the compliment of any event A is the event [not A], i.e. the event that A does not occur
Complementary Angles Two angles that add up to 90 degrees
Composition The combining of distinct parts or elements to create a whole
Compound Event An event whose probability of occurrence depends upon the probability of occurrence of two or more independent events
Compression To reduce a shape in size while retaining proportions
Conditional Probability The probability that an event will occur, when another event is known to occur or to have occured
Conditional Probability Formula The conditional probability of A given B is denoted by P(AIB) and defined by the formula P(AIB)=P(AB) P(B), provided P(B)>o
Congruence by AAS, ASA, SAS, SSS Triangles are congruent if any pair of corresponding sides and their included angles are equal in both triangles
Congruent Identical in form
Construction The drawing of various shapes using only a straight edge and compass (no measurement of lengths or angles is allowed)
Coordinates On the coordinate plane, the pair of numbers giving the location of a point (ordered pair)
Corresponding Angles The angles in matching corners of a transversal
Created by: michellemendez