## Math Terms Chapter 11

##### Created by:

comaxbro  on March 26, 2010

Pop out
No Messages

# Math Terms Chapter 11

 Pointa location in space that has no size or shape
1/47
Preview our new flashcards mode!

Order by

#### Definitions

Point a location in space that has no size or shape
Line a set of points that go forever in 2 directions (no curves in lines)
Line Segment a part or a piece of a line that has a beginning and an end
Ray a part or a piece of a line that has one endpoint and goes forever in one direction
Plane a flat surgace that goes forever in all direction
Angle a figure formed when 2 rays have a common end point
Vertex the common endpoint if the rays that form an angle
Degree a unit of measure for angles 360 degrees in a circle
Protractor a tool used to measure angles in degrees
Acute Angle an angle that is more than 0 degrees and less than 90 degrees
Right Angle an angle that measures exactly 90 degrees
Obtuse Angle an angle that is more than 90 degrees and less than 180 degrees
Straight Angle an angle that measures exactly 180 degrees
Parallel lines on the same plane that never intersect
Perpendicular lines intesect to form right angles
Skew lines that are not in the same plane, not intersecting, not parallel, and not perpendicular
Vertical Angles formed when 2 lines intersect. opposite each other and are congruent
Congruent means the same size and shape
Supplimentary Angles angles whose measures add up to 180 degrees
Complemetary Angles angles whose measures add up to 90 degrees
Adjacent Angles two angles that share a common ray. They are "right next to eachother"
Transversal a line that intersects two parallel lines
Alternate Interior Angles between the parallel lines and on opposite sides of the transersal, and not adjacent
Alternate Exterior Angles outside the parallel lines; on opposite sides of the transversal; not adjacent; congruent
Corresponding Angles located in the same position on each of the parallel lines; are congruent
Acute Triangle a triangle with 3 acute angles
Right Triangle a triangle with one right angle; the other 2 are always acute
Obtuse Triangle a triangle with one obtuse angle; the other two angles are always acute
Scalene Triangle a triangle with all of the sides a different length
Isosceles Triangle a triangle with at least two congruent sides
Equilateral Triangle a triangle with 3 congruent sides; is always acute and also equiangular
Polygon a closed plane figure made of line segments that meet at their endpoints to form vertices
Trapezoid one pair of parallel sides
Parallelogram 2 pairs of parallel sides; opposite sides are congruent
Rhombus 2 pairs of parallel sides and 4 congruent sides
Rectangle quadrilateral with 2 pairs of parallel sides; opposite sides are congruent; 4 right angles
Square 2 pairs of parallel sides; 4 right angles; 4 congruent sides
Diagonal a line segment that connects 2 non-consecutive vertices of a polygon
Regular Polygon any polygon with all sides congruent (equilateral) and all angles congruent (equiangular)
Translation a transformation that moves a figure, horizontally, vertically, or diagonally; it is also called a slide
Reflection a transformation that flips a figure across a line; a mirror image
Rotation a transformation that turns a figure around a point; the point of rotation can be on the figure, outisde the figure or inside the figure
Line of Symmetry a line drawn through a figure that creates two halves that are mirror images of each other(that are congruent to each other
Equilateral sides are congruent
Equiangular angles are congruent
Similar Figures two figure that are the same shape that have congruent corresponding angles, but are differenet sizes

### First Time Here?

Welcome to Quizlet, a fun, free place to study. Try these flashcards, find others to study, or make your own.

### Set Champions

##### Space Race Champion

1,220 points by comaxbro

comaxbro