Lines
This is part of a line with two endpoints
What is a line segment?
This is a 90 degree angle
What is a right angle?
The three ways to classify a triangle by its angle measure
What is are acute, obtuse, and right triangles?
This quadrilateral has 4 congruent sides and 4 right angles
What is a square?
This is a line segment inside a circle with one endpoint on the center and the other on the circle.
What is radius
This element has one endpoint and continues in one direction forever
What is a ray?
Two angles that add up to 180 degrees
What are supplementary angles?
An equilateral triangle has angle measures of?
60 degrees
This is a quadrilateral that has two pairs of parallel and congruent sides.
What is a parallelogram?
The diameter is a special type of this line segment that has both endpoints on the circle
Chord
Two lines that intersect to form a right angle
What are perpendicular lines?
Two angles that add up to 90 degrees
What are complementary angles?
This triangle has two congruent side lengths.
Isosceles
This is a quadrilateral with 4 congruent sides and no right angles.
What is a rhombus?
This type of angle is formed when two radii meet.
Central angle
Two lines that are the same distance apart and will never touch.
What a parallel lines?
this is the number of degrees in a straight angle
What is 180 degrees?
This triangle does not have any congruent sides.
Scalene
A parallelogram has one angle that measure 60 degrees. Find the other three angles.
What are 120, 60, and 120 degrees?
This is the distance on a circle between two points
Arc
On a line segment, this is the halfway point or middle.
Midpoint
These are two angles that share the same vertex and are opposite each other.
Vertical angles
An isosceles right triangle has angle measures of?
45, 45, and 90 degrees.
These quadrilaterals only have one pair of parallel sides.
What are trapezoids?
This is a piece of the interior of the circle
Sector