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Geometry1.5&1.6Voc

TermDefinition
Quadrilateral Any polygon with four sides and four vertices. The sum of its interior angles is always 360 degrees.
Kite A quadrilateral with two sets of adjacent sides congruent, a pair of non-vertex angles that are congruent and a long diagonal that bisects the smaller diagonal and vertex angles.
Vertex Angles (in a kite) The pair of angles in a kite that are formed between the two pairs of congruent sides.
Non-Vertex Angles (in a kite) The pair of opposite angles in a kite formed between the two non-congruent sides and are congruent.
Trapezoid A polygon with one set of parallel sides and the adjacent angles are supplementary.
Parallel Two or more lines that are always the same distance apart and never intersect. In a coordinate plane, parallel lines have the same slope.
Isosceles Trapezoid A polygon with one set of parallel sides, a set of non-parallel sides that are congruent, base angles are congruent, and the adjacent angles are supplementary.
Base Angles (in a trapezoid) The pairs of angles that share a base side and are congruent.
Parallelogram A quadrilateral where both pairs of opposite sides are parallel and equal in length. Opposite angles are congruent, and its diagonals bisect each other.
Adjacent Angles (in a parallelogram) Consecutive angles that share a side and are supplementary.
Rectangle A polygon with opposite sides equal and parallel with four right angles. Its diagonals are congruent and bisect each other.
Rhombus A polygon with all four sides of equal length. Its diagonals are perpendicular bisectors of each other.
Square A polygon with 4 equal sides, 4 right angles, opposite sides parallel, and diagonals that are congruent and bisect each other at right angles.
Conjecture A statement that is believed to be true based on observations or examples, but has not yet been proven.
Perpendicular Lines, segments, or rays that intersect to form a right angle (90°).
Bisect To cut or divide a geometric figure into two equal or congruent parts.
Angle Bisector A ray or line segment that divides an angle into two congruent adjacent angles.
Distance The numerical measurement of the length of the line segment between two points. It is always a positive value.
Perimeter The total distance around the outside edges or boundary of a two-dimensional shape.
Area The amount of space inside a flat, two-dimensional shape. It is measured in square units.
Base A side of a polygon or a face of a solid figure that is used as a reference for calculating measurements like area or volume.
Height The perpendicular distance from a base to the opposite vertex or side.
Perpendicular Two lines, line segments, or planes are perpendicular if they intersect at a right angle (90 degrees).
Midpoint The point on a line segment that is exactly halfway between its two endpoints. It is equidistant from both ends and divides the segment into two equal parts.
Dimensions Measurements that describe the size of an object, usually length, width, and height.
0D (zero-dimensional) A point. It has no width, length, or height making it this dimension.
1D (one-dimensional) A line segment has length making it this dimension.
2D (two-dimensional) Flat shapes have length and width making it this dimension.
3D (three-dimensional) Solid objects like boxes have length , width, and height making it this dimension.
Formula A mathematical rule or equation that expresses the relationship between quantities.
Composite figures A geometric figure that is made up of two or more simpler, basic geometric figures.
Created by: lohrj
 

 



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