march 7 Flashcards
lines whose slopes are opposite reciprocals
perpendicular
the orthocenter is inside the triangle for this type of triangle
acute
a ray that divides an angle into 2 equal parts
angle biscector
the point of concurrency for the medians in a triangle
centroid
a segment that has endpoints at a vertex and the midpoint of a opposite side
median
the point of conccurency that is equidistance from the sides of a triangle
incenter
three or more lines intersect at one point
concurrent
the orthocenter is at the intersection of the legs for this type of triangle
right
a segment from a vertex of a triangle to the line containing the opposite at a 90 degree angle
altitude
states the same thing as a theorem in the opposite direction
converse
theorem that states if two sides of a triangle are congruent, and the included angles are not congruent , then the longer third side is opposite the larger included angle
hinge
a line that divides a segment into 2 equal parts at a 90 degree angle
perpendicular bisector
theorom that states that the sums of the lengths of any two sides of a triangle is greater than the length of the 3rd side
triangle inequality theorem
the point of concurrency for the altitudes in a triangle
orthocenter
the point of concurrency that is equidistant from the vertices of the triangle
circumcenter
