When two lines intersect, the opposite angle are called "vertical angles" and share this quality
What is congruence
200
Opposite over adjacent
What is Sin
200
The formula for the area of a rectangle
What is base times height
200
The product of the slopes of two perpendicular lines
What is -1
200
The locus of points that are a certain distance from a given point
What is a circle
300
These lines never intersect
What are parallel lines
300
The property that says that the third side of any triangle is shorter than the sum of the other two sides
What is the triangle inequality
300
This quadrilateral has both pairs of opposite sides congruent
What is a parallelogram
300
The formula for the slope of a line that passes between two points (x1, y1) and (x2, y2)
What is (y2-y1)/(x2-x1)
300
The number of points that are equidistant from two lines and are a given distance from the intersection go the two lines
What is 4
400
The five theorems on triangle congruence
What are AAS, SSS, SAS, ASA, and the H-L Postulate
400
If you are given the length of the hypotenuse and adjacent side of a right triangle, you can calculate the measure of the angle using this trigonometric function
What is arccosine
400
This is the number of triangles that a dodecagon (12-sided polygon) can be split into
What is 10
400
The formula for the distance between two points (x1, y1) and (x2, y2)
What is the distance formula
400
The locus of points that are equidistant from two intersecting lines
What are two perpendicular lines
500
In the diagram, prove that triangle ABC is congruent to triangle CDE
ASA
500
Find the area of the triangle in the diagram
30 square inches
500
This is the measure of every angle of an n-sided polygon
What is 180˚(n-2)/n
500
Where the lines y=3x-2 and y=-x+6 intersect
What is (2, 4)
500
This system of inequalities describes the triangle with vertices at the origin, (0, 3), and (4, 0)