Basic Elements
An undefined term representing a location in space with no size.
What is a point?
Two angles whose measures sum to 90 degrees.
What are complementary angles?
The sum of the interior angles of any triangle.
What is $180 degrees?
A segment from the center of a circle to any point on the circle.
What is the radius?
In the statement "If it rains, then the grass is wet," the phrase "it rains" is this.
What is the conclusion?
A point, line, or ray that divides a segment into two equal halves.
What is a segment bisector?
A pair of adjacent angles that form a straight line.
What is a linear pair?
A four-sided polygon with exactly one pair of parallel sides.
What is a trapezoid?
A segment whose endpoints both lie on the circle.
What is a chord?
The "then" part of a conditional statement.
What is the conclusion?
Use the formula M = (𝑥1+𝑥2) divided by 2 and (𝑦1+𝑦2) divided by 2, to find this.
What is the Midpoint?
Lines in the same plane that never intersect.
What are parallel lines?
A polygon that is both equilateral and equiangular.
What is a regular polygon?
The distance around the outside of a circle.
What is circumference?
A basic rule of geometry that is accepted as true without proof.
What is a postulate?
Calculate the length between (0,0) and (3,4).
What is 5?
When parallel lines are cut by a transversal, these "Z-shaped" angles are congruent.
What are alternate interior angles?
Find the area of a triangle with a base of 10 and a height of 6.
What is 30?
A line that intersects a circle at exactly one point.
What is a tangent line?
A statement that has been proven true using logic and other established facts.
What is a theorem?
Points that lie on the same line are called ______, while points on the same flat surface are ______.
What are collinear and coplanar?
Two lines that intersect to form four right angles.
What are perpendicular lines?
The formula (n-2) X 180 finds this for any polygon.
What is the sum of interior angles?
A region of a circle bounded by two radii and an arc (looks like a pizza slice).
What is a sector?
What is a theorem?
What is a counterexample?