Angles 1
An angle is made up of 2 what?
Rays
A straight angle measures exactly what?
180 degrees
Congruent angles are
equal
2 angles have the same measurement
congruent
An angle that measures less than 90 degrees
acute angle
You measure an angle using a what?
Protractor
Adjacent angles share the same ?
vertex
Vertical angles are always equal?
True
2 rays that share the same starting point
angle
An angle that measures anywhere between 91 degrees and 180 degrees.
obtuse angle
A right angle measures exactly?
90 degrees
Adjacent angles are angles that are _______ to each other.
next to
2 angles next to each other (adjacent) that when you add them together they = 90 degrees
complementary
The point where the two rays meet in an angle.
vertex
The angle formed when 2 perpendicular lines cross and perfectly square or 90 degrees.
right angle
An acute angle measures ________than 90 degrees
Less than
The sum of complementary angles is
90 degrees
2 angles next to each other (adjacent) that when you add them together they = 180 degrees.
supplementary
A line that starts at a given point and goes off in one direction without stopping.
ray
An angle that measures 180 degrees. It is also a straight line.
straight angle
An obtuse angle measures___________ than 90 degrees.
more than
The sum of supplementary angles is
180 degrees
Give me examples of an acute and obtuse angle.
?
Any two angles that are next to one another and share the same vertex.
adjacent
2 angles that are formed when 2 lines cross. They are also congruent.
vertical