Term Picture Definition Notation Acute Angle, Study notes of Physics

Angle bisector. A ray that divides an angle into two angles that are congruent. Between. When three points are collinear, then one point is between the.

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Term
Picture
Definition
Notation
Acute Angle
Classify by angle measure:
An angle whose
measure is less than
90°
Adjacent angles
Two angles that share
a common vertex and
side, but have no
common interior
points.
Angle
A figure formed by two
rays with a common
endpoint.
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Term Picture Definition Notation

Acute Angle

Classify by angle measure: An angle whose measure is less than 90°

Adjacent angles

Two angles that share a common vertex and side, but have no common interior points.

Angle

A figure formed by two rays with a common endpoint.

Angle bisector

A ray that divides an angle into two angles that are congruent

Between

When three points are collinear, then one point is between the other two.

Circle

The set of all points in a plane at a fixed distance from a fixed point.

Collinear Points Points that lie on the

same line

Distance around

an arc

The length of part of the circumference of a circle

Equal lengths

Congruent segments have the same measure.

AB=TO

Intersection

The set of points that two or more geometric figures have in common.

(^) ⋂

Line

An undefined geometric term that has one dimension. It extends without end in two directions.

Line Segment

A portion of a line that consists of a defined beginning and endpoint and all the points in between

Linear Pair

Two adjacent angles whose noncommon sides are opposite rays

Midpoint

A point that bisects a segment into two congruent segments.

or

Obtuse Angle

Classify by angle measure: An angles whose measure is greater than 90°

Point of Intersection

The point where two lines or segments meet.

Plane

An undefined term that has two dimensions. It extends without end in both dimensions

Ray

Part of a line that consists of a point called an endpoint and all points on the line that extend in one direction

Right angle

Classify by angle measure: An angle with measure equal to 90°

Segment bisector

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

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Straight angle

Classify by angle measure: An angle with measure equal to 180°

Supplementary

angles

Two angles whose measures have the sum 180°

Vertical angles

Two angle whose sides form two pairs of opposite rays