Geometry Unit 1

a segment bisector.

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

Two angles in which the sum of their measures is 90∘ are ______ angles.

Complementary

_______ Geometry is based on the postulates of Euclid.

Euclidean

geometry

a branch of mathematics that deals with the study of geometric figures

line segment

a portion of a line consisting of two points and all the points between them

What is a postulate/axiom?

a rule that is accepted without proof

line

a straight path that has no thickness and extends forever

Two angles that share a common vertex and one common side but have no common interior points are ______ angles.

adjacent

An ______ is a figure formed by two rays with a common endpoint.

angle

A ray that bisects an angle into two congruent angles is an _______.

angle bisector

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

construction

A number that corresponds to a point is an ______

coordinate

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

coordinate plane

A point is a location in space that has neither size nor _____.

dimension

The set of points outside an angle is the _______ of the angle.

exterior

The set of points between the two sides of an angle is the _____ of the angle.

interior

A ___ consists of two endpoints and all the points in between them.

line segment

A set of coordinates that indicates the location of a point on a coordinate plane is a _______.

ordered pair

coplanar points

points that lie on the same plane

Plane geometry deals with _______ objects.

two-dimensional

The _____ is the common endpoint of the rays of an angle.

vertex

Two nonadjacent angles formed by two intersecting lines are _______ angles.

vertical

origin

The point of intersection of the x-axis and the y-axis on a coordinate plane

Whats solid geometry?

Geometry that deals with three-dimensional geometry

A ___ is a flat surface that has no thickness and extends forever.

Plane

What are collinear points?

Points that lie on the same line

A ___ is a part of a line that has one endpoint and extends in only direction forever.

Ray

The four regions into which a coordinate plane are divided are called _____.

quadrants

An endpoint is at both ends of a line _____ or at the start of a ray.

segment

Congruent means having the same_____ and ______ .

size;shape

A line is a _____ path that has no thickness and extends forever.

straight

Two angles in which the sum of their measures is 180∘ _____ angles

supplementary

endpoint

the point at either end of a line segment or the point at the start of a ray