Lines 1 Lines 2 Angles
What is a point?
An exact location in space.
What is a plane?
A flat surface that extends forever in all directions.
What is a vertex?
The point where two sides come together.
What is a line?
A straight path of points that goes on forever in only one direction.
What are congruent line segments?
Line segments with the same lengh.
What is an acute angle?
An angle that is less than 90 degrees.
What is a line segment?
Part of a line with two endpoints.
What are perpendicular lines?
Intersecting lines that form right angles.
What is a right angle?
An angle that is 90 degrees.
What is a midpoint?
The point halfway between the endpoints of a line segment.
What are parallel lines?
Lines that are in the same plane but do not intersect.
What is an obtuse angle?
Angle measuring more than 90 degrees.
What is a ray?
Part of a line with one endpoint, extending forever in only one direction.
What are skew lines?
Lines that lie in different planes. They do not intersect and are not parallel.
What is a straight angle.
An angle measuring 180 degrees.