Meet the Angles
An angle that measures exactly 90 degrees.
What is a right angle?
Two angles whose sum adds up to exactly 90 degrees.
What are complementary angles?
A physical location that has no length, width, or depth. It is typically drawn as a very small circle and labeled with a capital letter.
What is a point?
Lines in the same plane that never intersect and are always the same distance apart.
What are parallel lines?
The measures of an angle that is complementary with a 60 degree angle.
What is 30 degrees?
An angle whose measure is between 90 and 180 degrees.
What is an obtuse angle?
Two angles that have a common vertex and rays that point in opposite directions.
What are vertical angles?
A set of connected points that extends forever in two directions.
What is a line?
Lines that intersect to form a right angle.
What are perpendicular lines?
The measure of one of a pair of vertical angles if the other vertical angle is 50 degrees.
What is 50 degrees?
An angle whose measure is less than 90 degrees.
What is an acute angle?
Two non-overlapping angles that share a ray.
What are adjacent angles?
A portion of a line that has both a starting and ending point.
What is a line segment?
A point that divides a line segment into 2 equal parts.
What is a midpoint?
The measure of an angle if it is supplementary to an 80 degree angle.
A straight angle has this many degrees.
What is 180 degrees?
Two angles whose sum adds up to exactly 180 degrees.
What are supplementary angles?
A portion of a line that has a starting point and then extends forever in one direction.
What is a ray?
A ray or line that divides an angle into two perfectly equal halves.
What is an angle bisector?
The name of
\overline (AB)
is.
What is line segment AB?
This tool is used to measure an angle.
What is a protractor?
The measures of vertical angles.
What is the same (or equal)?
This is formed when two rays share a common endpoint.
What is an angle?
The common endpoint where two rays meet to form an angle.
What is a vertex?
If points lie on the same line they are called this.
What is collinear?