Perpendicular Bisectors
Angle Bisectors
Medians
Altitudes
Triangle Congruence
100
The name of the center of a triangle where the perpendicular bisectors are concurrent.
What is the circumcenter?
100
Name the theorem: If a point is on the bisector of an angle, then it is equidistant from the two sides of the angle.
What is the Angle Bisector Theorem?
100
The name of the center of a triangle where the medians are concurrent.
What is the centroid?
100
The altitude of a triangle is a segment going from the vertex of a triangle to the opposite that also has this property.
What is perpendicular?
100
Name the Theorem: Two sides and the included angle of one triangle are congruent to two sides and the included angle of a second triangle.
What is Side-Angle-Side?
200
The perpendicular bisectors of a triangle intersect at a point that is equidistant from these features of a triangle.
What are the vertices?
200
Name the theorem: If a point is in the interior of an angle and is equidistant from the sides of the angle, then it lies on the bisector of the angle.
What is the Converse of the Angle Bisector Theorem?
200
The centroid is also known as this.
What is the center of gravity?
200
The name of the center of a triangle where the altitudes are concurrent.
What is the orthocenter?
200
Name the Theorem: Three sides of one triangle are congruent to three sides of a second triangle.
What is Side-Side-Side?
300
The circumcenter of this type of triangle intersects outside of the triangle.
What is an obtuse triangle?
300
The name of the center of a triangle where the angle bisectors are concurrent.
What is the incenter?
300
The centroid of a triangle will always be found here.
What is inside the triangle?
300
The orthocenter of a right triangle is located here.
What is at the vertex of the right angle?
300
Name the Theorem: Two angles and the included side of one triangle are congruent to two angles and the included side of a second triangle.
What is Angle-Side-Angle?
400
Name the theorem: If a point is on the perpendicular bisector of a segment, then it is equidistant from the endpoints of the segment.
What is the Perpendicular Bisector Theorem?
400
The angle bisectors of a triangle intersect at a point that is equidistant from these features of a triangle.
What are the sides?
400
The medians of a triangle intersect at a point that is this fraction of the distance from each vertex to the midpoint of the opposite side.
What is two-thirds?
400
The orthocenter of an acute triangle is located here.
What is inside the triangle?
400
Name the Theorem: Two angles and the non-included side of one triangle are congruent to two angles and the non-included side of a second triangle.
What is Angle-Angle-Side?
500
The circumcenter of this type of triangle intersects on the hypotenuse of the triangle.
What is a right triangle?
500
The incenter of a triangle is always found here.
What is inside the triangle?
500
The centroid is the same center as the circumcenter, orthocenter, and incenter in this type of triangle.
What is an equilateral triangle?
500
The orthocenter of an obtuse triangle is located here.
What is outside the triangle?
500
Name the Theorem: The hypotenuse and a leg of a right triangle are congruent to the hypotenuse and a leg of a second right triangle.
What is Hypotenuse-Leg?
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