Angles
Basic Parts
Angle Relationships
Lines and Angles
Triangles
100
Is the point that the two rays have in common in an angle.
What is a vertex?
100
This is a half line that has one end point.
What is ray?
100
Is a line that cuts through two or more lines.
What is a transversal?
100
These lines never intersect, and lie on the same plane.
What are parallel lines?
100
This triangle contains a 90 degree angle.
What is a right triangle?
200
The sum of the measures of these angles are equal to 180 degrees.
What are supplementary angles?
200
This is part of a line that has two endpoints.
What is a line segment?
200
Are angles that are on the inside of two parallel lines and are on opposite sides of a transversal.
What are alternate interior angles?
200
This angle has a measurement that is more than 90 degrees.
What is an obtuse angle?
200
This triangle has no sides of the same length.
What is a scalene triangle?
300
Angles that have the same measure.
What are congruent angles?
300
This is a flat surface that goes on and on forever in all directions.
What is a plane?
300
Angles that lie on the same side of a transversal and are in corresponding positions.
What are corresponding angles?
300
This angle has a measurement of 90 degrees.
What is a right angle?
300
This triangle contains an angle that is more than 90 degrees.
What is an obtuse angle?
400
These angles share a common vertex and ray, but do not overlap.
What are adjacent angles?
400
Is a location in space.
What is a point?
400
These angles are formed by two intersecting lines and are opposite of each other.
What are vertical angles?
400
This angle has a measurement of less than 90 degrees.
What is an acute angle?
400
This triangle has two sides that have the same length.
What is an isosceles triangle?
500
The sum of the measures of these angles are equal to 90 degrees.
What are complementary angles?
500
Is a series of points that extends endlessly in opposite directions.
What is a line?
500
Two rays that have a common endpoint.
What is an angle?
500
These lines never intersect, and lie in different planes.
What are skew lines?
500
This triangle's angles all have a measurement less than 90 degrees.
What is an acute triangle?
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