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Activity 13-14 Vocab
Term | Definition |
---|---|
Point of Concurency | A point where three or more lines intersect |
Altitude | A segment that connects a vertex of a triangle to the opposite side so that it is perpendicular to that side |
Median | A segment that connects a vertex of a triangle to the midpoint of the opposite side |
Angle Bisector | A line, segment, or ray that divides an angle into two congruent parts. |
Perpendicular Bisector | A line, segment, or ray that divides a segment into two congruent parts and is perpendicular to the segment |
Midsegment | A segment that joins the midpoints of two sides of a triangle |
Centroid | The point at which three medians intersect in a triangle |
Incenter | The point at which three angle bisectors intersect in a triangle |
Circumcenter | The point at which three perpendicular bisectors intersect in a triangle |
Orthocenter | The point at which three altitudes intersect in a triangle |
Exterior Angle Theorem | The sum of the measures of the two remote interior angles is equal to the measure of the exterior angle |
Triangle Sum Theorem | The sum of the measures of the three interior angles of a triangle is equal to 180 degrees |
Isosceles Triangle Theorem | If a triangle is isosceles, then the base angles are congruent |
Interior Angle | An angle formed by two sides of a triangle |
Exterior Angle | An angle formed by one side of a triangle and the extension of an adjacent side |
Remote Interior Angle | An interior angle that is not adjacent to a given exterior angle |
Isosceles Triangle | A triangle with two congruent sides |
Centroid Measure Theorem | The distance from the centroid to the vertex is twice the distance from the centroid to the Midpoint |
Base Angles | Angles opposite the congruent sides of an isosceles triangle |