Lines and Angles
An angle that measures exactly 90 degrees
What is a right angle?
A triangle with three sides of completely different lengths
What is a scalene triangle?
A straight line segment passing through the center of a circle connecting two points on the edge
What is the diameter?
The formula used to find the area of a rectangle
What is length times width?
A polygon with exactly five sides
What is a pentagon?
Two lines in the same plane that never intersect
What are parallel lines?
The interior angles of any triangle always add up to this total number of degrees
What is 180 degrees?
The total distance around the outside edge of a circle
What is the circumference
The formula 1/2 base times height calculates the area of this specific shape
What is a triangle?
This specific type of polygon has all sides and all angles equal
What is a regular polygon?
Two angles whose sum is exactly 180 degrees
What are supplementary angles?
Named after a Greek mathematician, this theorem states a2 + b2 = c2 for right triangles.
What is the Pythagorean Theorem?
This mathematical constant represents the ratio of a circle's circumference to its diameter
What is Pi?
The formula used to calculate the area of a circle
what is pi times radius squared?
A four sided polygon with exactly one pair of parallel sides
What is a trapezoid?
This geometric term describes lines that intersect at a perfect 90 degree angle
What is perpendicular?
In a right triangle, it is the name of the longest side opposite the right angle
What is the hypotenuse?
A straight line that touches the outside of a circle at exactly one single point
What is a tangent line?
The formula used to find the volume of a rectangular prism or box
What is length times width times height?
A regular polygon with this many sides has interior angles that each measure 120 degrees
What is a hexagon?
When two lines intersect, these opposite angles are always equal to each other
What are vertical angles?
his point is the center of a triangle where all three medians intersect
What is the centroid?
A line segment whose endpoints both lie on the circle, but it does not have to pass through the center
What is a chord?
The formula v=4/3 pi times radius squared finds the volume of this perfect 3D round object
What is a sphere?
This is the term for a 10 sided polygon
What is a decagon?