Geometry Unit 1 Section 2

Segment Bisector

A line, line segment, or ray that intersects a line segment at its midpoint.

Construction

A method of creating a geometric figure that is mathematically precise by using a compass and straightedge.

Coordinate

A number that corresponds to a point.

Coordinate Plane

A plane that is divided into four regions by a horizontal line, called the x-axis, and a vertical line, called the y-axis.

Midpoint

A point that bisects a segment into two congruent segments.

Bisect

Dividing into two equal or congruent parts.

Congruent

Having the same shape and size.

Segment Addition Postulate

If three points A, B, and C are collinear and B is between A and C, then AB + BC = AC.

Congruent Segments

Line segments that have the same length.

Quadrant

One of four regions into which the coordinate plane is divided.

Ruler Postulate

The points on any line or line segment can be put into one-to-one correspondence with real numbers so that two selected points can have coordinates 0 and 1, and that the distance between two points is the absolute value of the difference between the corresponding numbers.

Ordered Pair

The set of coordinates that indicates the position of a point on a coordinate plane.

Origin

the point where the x-axis and the y-axis intersect in a coordinate plane. (0,0)