1st Semester Exam Flashcards
The side opposite of a vertex angle in an isosceles triangle
Base
The point of concurrency of the perpendicular bisectors of the sides of the triangle
Circumcenter
The point of concurrency of the angle bisectors of the triangle
Incenter
If not p, then not q
Inverse
The point of concurrency of the lines containing the altitudes of the triangle
Orthocenter
The point of concurrency of the medians of the triangle
Centroid
The side opposite the right triangle
Hypotenuse
Segment that has as its endpoints a vertex of the triangle and midpoint of the opposite side
Median
The perpendicular segment from a vertex to the line containing the side opposite that vertex
Altitude
A line that intersects two or more lines at distinct points
Transversal
If two lines lie on the same plane and do not intersect they are
Parallel lines
Angles that lie on the same side of the transversal and in corresponding positions
Corresponding angles
Opposite sides of the transversal and outside the lines
Alternate exterior angles
Lie on the same side of the transversal and on the inside of the lines
Same side interior angles
Lines that don not lie on the same plane
Skew lines
Lie on the same side and outside the lines
Same side exterior angles
Planes that do not intersect
Parallel planes
The statement obtained by reversing the hypothesis and conclusion of a conditional
Converse
