An angle that measures 90o is called what?
Right angle
a dot in geometry is called...
a point
lines that never intersect
parallel lines
True or false: Lines continue in one direction forever
False. Lines continue in both directions.
two points that are connected are called...
a line segment
A line has what on each end?
arrow
A ray has what on the ends?
a point and an arrow
An angles that measures 60o is what type of angle?
Acute
Lines that cross and form right angles are called what?
perpendicular lines
obtuse
lines that cross but do not make 90 degree angles
intersecting lines.
What is an angle that measures less than 90o
acute
a right angle measures how many degrees?
90
How many degrees is a complete circle?
360
how many degrees is a half a circle or a straight angle?
180
True or false: A right angle measures 90o
True
If an angle measures 155o what type of angle is it?
obtuse
The point at which two rays meet to form an angle
Vertex
How many right angles are in a 360o turn?
4
270