Geometry Definitions Flashcards

The distance around a circle

Points that lie on the same plane

<p>The sum of the lengths of the sides of a polygon</p> Signup and view all the answers

<p>Points, planes, lines in geometry</p> Signup and view all the answers

<p>An angle with a measure greater than 0° and less than 90°</p> Signup and view all the answers

<p>Angles that have the same vertex, share a common side, and do not overlap</p> Signup and view all the answers

<p>A figure formed by two rays with a common endpoint</p> Signup and view all the answers

<p>A ray whose endpoint is the vertex of the angle and is located in the interior of the angle</p> Signup and view all the answers

<p>The number of square units needed to cover a surface enclosed by a geometric figure</p> Signup and view all the answers

<p>The faces on the top and bottom of the figure</p> Signup and view all the answers

<p>Point R is between points P and Q if and only if R, P, and Q are collinear and PR + RQ = PQ</p> Signup and view all the answers

<p>Three or more points that lie on the same line</p> Signup and view all the answers

<p>Two angles are complementary if the sum of their measures is 90°</p> Signup and view all the answers

<p>A polygon for which a point on at least one of its diagonals lies outside the polygon</p> Signup and view all the answers

<p>A three-dimensional figure with one circular base and one vertex</p> Signup and view all the answers

<p>Having the same measure</p> Signup and view all the answers

<p>The process of drawing a figure using only a compass and a straightedge</p> Signup and view all the answers

<p>A polygon for which all diagonals are located in the interior of the polygon</p> Signup and view all the answers

<p>A solid figure whose bases are formed by congruent circles in parallel planes</p> Signup and view all the answers

<p>The most common unit of measure for angles</p> Signup and view all the answers

<p>The distance between two points</p> Signup and view all the answers

<p>The intersection of faces of a three-dimensional figure</p> Signup and view all the answers

<p>A triangle having all three sides congruent and all three angles congruent</p> Signup and view all the answers

<p>A triangle with three congruent angles</p> Signup and view all the answers

<p>All points outside the sides of the angle</p> Signup and view all the answers

<p>Surface of a figure</p> Signup and view all the answers

<p>All points between the two sides of an angle</p> Signup and view all the answers

<p>The set of elements common to two or more sets</p> Signup and view all the answers

<p>A never-ending straight path</p> Signup and view all the answers

<p>Points upon a line</p> Signup and view all the answers

<p>Part of a line containing two endpoints and all the points between them</p> Signup and view all the answers

<p>On a line segment, the point that is halfway between the endpoints</p> Signup and view all the answers

<p>A polygon with n sides</p> Signup and view all the answers

<p>An angle that measures more than 90° but less than 180°</p> Signup and view all the answers

<p>Two rays that are part of the same line and have only their endpoints in common</p> Signup and view all the answers

<p>Lines which meet to form right angles and whose slopes have a product of -1</p> Signup and view all the answers

<p>A two-dimensional flat surface that extends in all directions</p> Signup and view all the answers

<p>A simple closed figure in a plane formed by three or more line segments</p> Signup and view all the answers

<p>A solid with four or more flat surfaces that are polygonal regions</p> Signup and view all the answers

<p>A polyhedron with two parallel, congruent faces called bases</p> Signup and view all the answers

<p>A solid figure that has a polygon for a base and triangles for sides</p> Signup and view all the answers

<p>A part of a line that extends indefinitely in one direction from a fixed point</p> Signup and view all the answers

<p>A polygon that has all sides congruent and all angles congruent</p> Signup and view all the answers

<p>An angle that measures exactly 90°</p> Signup and view all the answers

<p>To separate something into two congruent parts</p> Signup and view all the answers

<p>The segments that form a closed figure</p> Signup and view all the answers

<p>The set of all points in space that are a given distance from a given point, called the center</p> Signup and view all the answers

<p>Two angles are supplementary if the sum of their measures is 180°</p> Signup and view all the answers

<p>The sum of the areas of all the faces of a three-dimensional figure</p> Signup and view all the answers

<p>The common endpoint of the rays forming the angle</p> Signup and view all the answers

<p>Opposite angles formed by the intersection of two lines</p> Signup and view all the answers

<p>The number of cubic units needed to fill the space occupied by a solid</p> Signup and view all the answers

<p>An expression consisting of one or more numbers and variables along with one or more arithmetic operations</p> Signup and view all the answers

<p>A conclusion reached that is based on inductive reasoning</p> Signup and view all the answers

<p>A compound statement formed by joining two statements with the word and</p> Signup and view all the answers

<p>The statement formed by exchanging the hypothesis and conclusion of a conditional statement</p> Signup and view all the answers

<p>The statement formed by negating both the hypothesis and conclusion of a conditional statement</p> Signup and view all the answers

<p>A rule of geometry that is accepted as being true without proof</p> Signup and view all the answers

<p>A statement that can be justified by logical reasoning and must be proven before it is accepted as true</p> Signup and view all the answers

<p>Lines in the same plane that never intersect and have the same slope</p> Signup and view all the answers

<p>An equation of the form y - y1 = m(x - x1), where m is the slope and (x1, y1) is a given point on a nonvertical line</p> Signup and view all the answers

<p>The change in a quantity over time</p> Signup and view all the answers

<p>Two nonparallel lines that do not intersect</p> Signup and view all the answers

<p>The ratio of the change in the y-coordinates (rise) to the corresponding change in the x-coordinates (run)</p> Signup and view all the answers

<p>An equation of the form y = mx + b, where m is the slope and b is the y-intercept</p> Signup and view all the answers

<p>A line that intersects two or more other lines to form eight or more angles</p> Signup and view all the answers

<p>A triangle in which each angle measures less than 90°</p> Signup and view all the answers

<p>The equal angles formed by the base and the congruent sides of an isosceles triangle</p> Signup and view all the answers

<p>Polygons that have the same shape and size</p> Signup and view all the answers

<p>Parts of congruent or similar figures that match</p> Signup and view all the answers

<p>A triangle with three congruent angles</p> Signup and view all the answers

<p>An angle formed by two given sides of a triangle</p> Signup and view all the answers

<p>A side common to two given angles of a triangle</p> Signup and view all the answers

<p>A triangle with at least two congruent sides</p> Signup and view all the answers

<p>A transformation in which a figure is flipped over a line of symmetry</p> Signup and view all the answers

<p>A triangle having one right angle</p> Signup and view all the answers

<p>A transformation in which a figure is turned around a fixed point</p> Signup and view all the answers

<p>A triangle with no congruent sides</p> Signup and view all the answers

<p>A transformation in which a figure is slid in any direction</p> Signup and view all the answers

<p>A line segment perpendicular to the base of a figure with endpoints on the base and on the vertex opposite the base</p> Signup and view all the answers

<p>The point of intersection of the three medians of a triangle</p> Signup and view all the answers

<p>The point of concurrency of the perpendicular bisectors of a triangle</p> Signup and view all the answers

<p>Three or more lines or segments that meet at a common point</p> Signup and view all the answers

<p>The point of concurrency of the angle bisectors of a triangle</p> Signup and view all the answers

<p>The middle number in a set of data when the data are arranged in numerical order</p> Signup and view all the answers

<p>The point of concurrency of the altitudes of a triangle</p> Signup and view all the answers

<p>A segment that is perpendicular to another segment and passes through that segment's midpoint</p> Signup and view all the answers

<p>A segment joining two nonconsecutive vertices of a polygon</p> Signup and view all the answers

<p>A trapezoid with two congruent legs</p> Signup and view all the answers

<p>A quadrilateral with exactly two distinct pairs of adjacent congruent sides</p> Signup and view all the answers

<p>The sides of a right triangle that form the right angle</p> Signup and view all the answers

<p>A segment with endpoints that are the midpoints of two sides of a triangle</p> Signup and view all the answers

<p>A quadrilateral with both pairs of opposite sides parallel and congruent</p> Signup and view all the answers

<p>A parallelogram with four right angles</p> Signup and view all the answers

<p>A parallelogram with four congruent sides</p> Signup and view all the answers