Walk the line
A line with two end points.
What is a line segment?
The interior angles of this polygon add up to 180 degrees.
What is a triangle?
2πr
What is the circumference formula?
This is the degree measure of the three interior angles of a triangle combined.
What is 180 degrees?
These types of angles add up to 90 degrees.
What are complementary angles?
A line with a starting point, that goes on infinitely in the other direction.
What is a ray?
This polygon is made up of 5 sides and 5 vertices.
What is a pentagon?
πr2
What is the area of a circle formula?
These are the three classifications for triangles based on side lengths.
What are equilateral, isosceles and scalene?
These type of angles add up to 180 degrees.
What are supplementary angles?
These types of lines have the same slope.
Parallel lines
This common shape is not a polygon.
What is a circle?
A line that passes through a circle at two points on the circumference.
What is a secant?
These are the three classifications for triangles based on angle measures.
What are acute, obtuse and right?
This type of angle is formed by two intersecting lines, and is congruent to the angle it's opposite from.
What are vertical angles?
The line that extends from a point on the circle to another point on the circle, and crosses through the center point.
What is the diameter?
This suffix is used to name a 3-dimensional shape.
What is -hedron?
A line that touches a circle at only one point of the circumference.
What is a tangent?
This triangle segment starts at a vertex, and meets the opposite side at a 90 degree angle.
What is an altitude?
This type of angle has a vertex at the center of a circle and has the same measure of it's corresponding arc.
What is a central angle?
Perpendicular lines have this type of slope.
What is opposite reciprocal? (Or negative reciprocal?)
When this polygon is inscribed in a circle, it's opposite angles are supplementary.
What is a quadrilateral?
What is (4, -2)?
This theorem states that the points where medians cross is two-thirds of the distance from the vertex.
What is the centroid theorem?
This type of angle has a vertex on the circumference of a circle measures half it's corresponding arc.
What is an inscribed angle?