Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Euler angles wikipedia , lookup
Integer triangle wikipedia , lookup
Multilateration wikipedia , lookup
History of trigonometry wikipedia , lookup
Rational trigonometry wikipedia , lookup
Line (geometry) wikipedia , lookup
Perceived visual angle wikipedia , lookup
Pythagorean theorem wikipedia , lookup
Compass-and-straightedge construction wikipedia , lookup
Trigonometric functions wikipedia , lookup
Definitions and Symbols © 2008 Mr. Brewer A flat surface that never ends An exact location .A Read - point A Write - A A straight figure with two endpoints. a b Read – line segment ab Write AB A straight figure with no endpoints and goes on forever in both directions. G H Read – line GH Write - GH A straight figure with one end point. It goes on forever in one direction B Read – ray BA A Write BA An angle is formed by two rays with the same endpoint Read – angle PQR or angle RQP or angle Q P Write Q R Q PQR RQP A common endpoint of two rays or line segments. vertex When the two sides of an angle form a square corner. The angle measures 900. An angle that measures less than 900. Angle measures less than 900 An angle that measures 0 more than 90 . Angle measures more than 900 Lines that meet or cross at a common point A D E C Write - AB and B CD intersect at point E Intersecting lines that form right angles. H F J I G Read – line FG is perpendicular to line HI Write FG HI Lines in the same plane that never cross K L M N Read – line KL is parallel to line MN Write - KL KL A plane figure where all the points on the circle are the same distance from the center. A circle is named by its center point .A Circle A A point in the center of a circle . Center Any line segment with endpoints at the center of the circle and on the circle. C B BC is a radius of circle B Any line segment that passes through the center of the circle and has both endpoints on the circle. Twice the length of the radius. C B CD is a diameter of circle B D A path that begins and ends at the same point and does not cross itself A closed figure formed from line segments that do not cross. Polygon means, “Many Angles.” Most polygons are named for the number of angles it has. Ex. Tri means 3… Triangle “Must have 3 or more sides.” A four sided polygon A quadrilateral with opposite sides that are parallel and the same length 8 in. 8 in. A quadrilateral with opposite sides that are parallel, the same length, and have all right angles All Right Angles 10 in 4 in 4 in 10 in A quadrilateral with opposite sides that are parallel, all the sides are the same length, and have all right angles All Right Angles 4 in 4 in 4 in 4 in A parallelogram with all four sides equal 22 in 22 in A quadrilateral with exactly one pair of parallel sides Parallel Sides A polygon with three sides A triangle with one right angle. A triangle whose sides are all equal in length 8 mm None of the sides are equal in length 40 in Two sides are equal in length 15 cm Figures with exactly the same shape. They may or may not be the same size Figures with exactly the same size and shape. Movement of a figure along a line. A movement of a figure over a line so that the figure faces in the opposite direction. The lines may be imaginary. The movement of a figure around a point. 90 degree turn 180 degree turn The movement of a figure around a point. 270 degree turn 360 degree turn A figure has a line of symmetry if it can be folded so that its two parts match. The fold is called the line of symmetry. A pair of numbers used to locate a point on a grid. The first number tell you to move across the X – axis. The second number tells you to move up or down the Y – axis. Y X 3,2 Says move 3 right Move 2 up to your point The starting point or the ordered pair (0 , 0) Y X origin A figure that has one or more lines of symmetry.