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Honors Geometry-1st Vocab Set
First Vocab Set
20
Mathematics
10th Grade
01/28/2013

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Cards

Term
Angle
Definition
The space usually measured in degrees b/w 2 intersecting lines or surfaces at or close the point where they meet.
Term
Angle Bisector
Definition
A Ray that divides an angle into 2 congruent angles
Term
Vertex
Definition

The end of an angle


[image]

Term
Sides
Definition
Number of faces on a shape.
Term
Area of a triangle
Definition
1/2 * base * height
Term
Area of a Square/Rectangle/Parallelagram
Definition
L * W * H
Term
Area of a Trapazoid
Definition
[image]
Term
Midpoint
Definition
A point that divides the segment into 2 congruent segments.
Term
Parallelagram
Definition
Four sided rectilinear figure w/ figure opposite side parallel
Term
Polygon
Definition
A plane figure with at least three straight sides and angles, and typically five or more.
Term

quad·ri·lat·er·al

Definition
A four-sided figure.
Term

cir·cum·fer·ence

Definition

The enclosing boundary of a curved geometric figure, esp. a circle.

Term
Area of a Circle
Definition
[image]
Term
Pi
Definition
The number π (/p/) is a mathematical constant that is the ratio of a circle's circumference to its diameter, and is approximately equal to 3.14159. It has been represented by the Greek letter "π" since the mid-18th century, though it is also sometimes written as pi. π is an irrational number, which means that it cannot be expressed exactly as a ratio of two integers (such as 22/7 or other fractions that are commonly used to approximate π); consequently, its decimal representation never ends and never settles into a permanent repeating pattern.
Term
Line Segment
Definition
In geometry, a line segment is a part of a line that is bounded by two distinct end points, and contains every point on the line between its end points.[image]
Term
Line
Definition
A geometrical object that is straight, infinitely long and infinitely thin.
Term
Ray
Definition
A portion of a line which starts at a point and goes off in a particular direction to infinity.
Term
Line Bisector
Definition
cuts an object into two equal parts
Term
Perpendicular Line
Definition

 two lines intersect at a right angle.

Opposite slopes, resipricale

Term
Parrallel Lines
Definition
Two lines on a plane that never meet. They are always the same distance apart.
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