Point - A location in space (no width, depth, etc.), Line Segment - A piece of a line contained by two points, Congruent - Same size, same shape., Line - A one-dimensional figure that is straight, has indefinite length in two directions, and no thickness, Ray - All points on a line that are on one side of a fixed point including the fixed point, Perpendicular - Two intersecting lines or line segments within a plane that form a right angle, Parallel - Two lines on the same plane that will never intersect, Plane - A flat two-dimensional surface that extends infinitely in all directions; it has no thickness and is defined by three non-collinear points., Collinear - Two or more points on the same line, Coplanar - Two or more points, lines, segments or rays on the same plane, Angle - Two rays that share a common endpoint, Vertex - The common endpoint where two rays meet to form an angle, Angle Bisector - Ray dividing the measure of an angle into two equal/congruent angles, Segment Bisector - Point, line, segment or ray that divides the measure of a segment into two equal/congruent parts, Midpoint - Point on a line segment that divides the segment into two equal/congruent parts, Pythagorean Theorem - Formula used with right triangles to find the missing leg or hypotenuse, Leg - The two sides of a right triangle that meet to form a right angle, Hypotenuse - The side of a right triangle that is across from/opposite from the right angle; it is also the longest side of a right triangle, Acute - An angle between zero and ninety degrees, Opposite - The side across from a given angle, Adjacent - The side next to a given angle; beside or next to, Reflectional (Line) Symmetry - Occurs when a figure can be divided into two identical halves by a line, and one half is a mirror image of the other, Rotational Symmetry - Exists in a shape when it looks the same after being rotated by a certain angle (less than 360 degrees) around a central point, Translation - Moves every point of a figure the same distance and the same direction (a “slide” along the coordinate plane), Rotation - Turns a figure around a fixed point called the center of rotation (a “turn” on the coordinate plane), Reflection - Flips a figure over a line known as the line of reflection (a “flip” on the coordinate plane), Dilation - The size of a figure is changed (either expanding or shrinking it) without changing the figures shape, Rigid Motion Transformations - Transformations where the size and shape of a figure does not change (i.e. translations, rotations and reflections), Equal - The relationship where two quantities, expressions, or objects have the same value, magnitude, or significance, represented by the equals sign (=)., Horizontal - Something that runs flat, parallel to the horizon, extending from left to right or right to left, and has a slope of zero., Vertical - An up-and-down line, characterized by having an undefined slope and an equation of the form x = a, where all points on the line share the same x-coordinate., Intersect - To cross, Endpoint - A specific point that marks the end of a geometric object, such as a line segment or a ray, Square Root - A value that, when multiplied by itself, yields the original number, Squared - To multiply that number by itself, or raise it to the power of 2, Right - A right angle, which is an angle of exactly 90 degrees, Difference - The result of subtracting one number from another., Parentheses (Grouping Symbols) - Symbols used to group parts of an expression or equation, most commonly to alter the default order of operations, Distance - The measurement of the space between two points, Formula - An equation or a set of symbols that expresses a fundamental rule, fact, or principle, often defining how different quantities relate to each other to perform calculations or find unknown values, Minor Gridlines - Secondary lines within a graph's coordinate system that appear between the main, or major, gridlines,

Unit 1 Geometry Basics

Print
Embed

Leaderboard

Flash cards is an open-ended template. It does not generate scores for a leaderboard.

Visual style

Options

Switch template

Continue editing: ?