MATH 240 QUESTIONS AND CORRECT ANSWERS

MATH 240 QUESTIONS AND CORRECT
ANSWERS
CPCTC ✅✅ANSW-corresponding parts of congruent triangles are congruent (CPCTC)



linear pair ✅✅ANSW-two adjacent supplementary angles form a linear pair



supplementary ✅✅ANSW-two angles who sum is 180 degrees



complementary ✅✅ANSW-two angles who sum is 90 degrees



median ✅✅ANSW-is the line segment drawn from any vertex to the midpoint of the opposite
side



altitude of a triangle ✅✅ANSW-is a line segment drawn from any vertex of the triangle,
perpendicular to and ending in the line that contains the opposite side



isosceles triangle ✅✅ANSW-a triangle that has two congruent sides



equilateral triangle ✅✅ANSW-a triangle that has three equal sides



vertical angles ✅✅ANSW-intersecting lines form vertical angles



alternate interior angles ✅✅ANSW-are a pair of interior angles on opposite sides of the
transversal not sharing a common vertex



Reflexive postulate ✅✅ANSW-any line segment is congruent to itself



Definitions ✅✅ANSW-should answer what is it and what does it do; they contain conditions that
are both necessary and sufficient. Ideally they are economical; they can be written as bi-conditional

perpendicular lines ✅✅ANSW-intersect to form right angles