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The point of concurrency of a triangle's three medians.
1. Midsegment of a triangle
2. Incenter
3. Centroid
4. Orthocenter
If two angles of one triangle are congruent to two angles of another triangle, then the third pair of angles are congruent.
1. Triangle Sum Theorem
2. Third Angles Theorem
3. Pythagorean Theorem
4. Exterior Angle Theorem
A segment from a vertex to the midpoint of the opposite side of a triangle.
1. Median of a triangle
2. Orthocenter
3. Centroid
4. Circumcenter
A segment that connects the midpoints of two sides of the triangle.
1. Midsegment of a triangle
2. Perpendicular bisector
3. Median of a triangle
4. Altitude of a triangle
The measure of an exterior angle of a triangle is greater than either of the measures of its
1. Alternate Interior Angles
2. Same Side Interior Angles
3. Remote Interior Angles
4. Complementary Angles