Vocab
Theorems
Angle Relationships
Classifying Triangles
Relationships in Triangles
100
A location with no size of shape.
What is a point?
100
If two angles are vertical, then they are congruent.
What is vertical angle theorem?
100
An angle with a degree measure of 90 degrees
What is right angle?
100
A triangle with three acute angles.
What is an acute triangle?
100
The point at which three perpendicular bisectors intersect in a triangle.
What is circumcenter?
200
A flat surface made up of points and extends indefinitely in all directions.
What is a plane?
200
If two angles form a linear pair, then they are supplementary.
What is linear pair theorem?
200
Two angles directly across from each other on intersecting lines.
What is vertical angles?
200
A triangle with a angle that equal 90 degrees.
What is a right triangle?
200
The point at which the three angle bisectors intersect in a triangle.
What is the incenter?
300
A segment, line, or plane that intersects a segment at its midpoint.
What is segment bisector?
300
If two angles complementary to the same angle, then are congruent.
What is congruent complements theorem?
300
Two angles with measures that sum to 90 degrees.
What is complementary angles.
300
A triangle that has an angle that is greater than 90 degrees.
What is obtuse triangle?
300
The point at which the three medians intersect in a triangle.
What is centriod?
400
The formula used to find the distance between two points on a coordinate plane.
What is distance formula?
400
An angle bisector in a triangle separates the opposite sides into two segments that are proportional to the lengths of the other two sides.
What is triangle angle bisector theorem?
400
Two angles that share a common aide and vertex.
What is adjacent angles?
400
A triangle with three congruent angles.
What is equiangular triangle?
400
The point at which the three altitudes intersect in a triangle.
What is the orthocenter?
500
A line segment with an associated direction
What is directed line segment?
500
If a line is parallel to one side of a triangle and intersects the other two sides, then it divides the sides into segments of proportional lengths.
What is triangle proportionality theorem?
500
Adjacent angles that are supplementary. Combined they form a straight line
What is linear pair?
500
A triangle with 3 congruent sides.
What is equilateral triangles?
500
The relationship of this triangle
What is orthocenter?