Segments,rays,parallel lines And Planes Flashcards
(14 cards)
What is a segment?
It is the part of a line consisting of two endpoints and all points between them.
What is a ray?
It is the part of a line consisting of one endpoint and all the points of the line on one side of the endpoint.
What are opposite rays?
It is two collinear rays with the same endpoint.
What are parallel lines?
It is coplanar lines that do not intersect.
What are skew lines?
It is non-coplanar, not parallel and do not intersect.
What are parallel planes?
It is planes that do not intersect.
What are congruent segments?
It is two segments with the same length.
What is a midpoint?
It is a point that divides a segment into two congruent segments.
How is a angle formed?
It is formed by two rays with the same endpoint.
A acute angle must be less than how many degrees.
It must be less than 90 degrees.
How many degrees does a right angle equal?
It equals 90 degrees.
What degrees is a obtuse angle greater than or less than?
A obtuse angle is greater than 90 degrees and less than 180 degrees.
How many degrees does a straight angle have?
A straight angle has 180 degrees.
What are congruent angles?
It is angles with the same measure.
