Rational numbers - ANSWER: All positive and negative integers, fractions and
decimal numbers.
irrational numbers - ANSWER: Numbers that cannot be expressed as a ratio of two
integers. Their decimal expansions are nonending and nonrepeating.
real numbers - ANSWER: the set of all rational and irrational numbers
Orthocenter - ANSWER: The point of concurrency of the altitudes of a triangle
Centroid - ANSWER: The point of concurrency of the medians of a triangle
AAS - ANSWER: if two angles and a non-included side of one triangle are congruent
to the corresponding two angles and side of a second triangle, then the two triangles
are congruent
SAS - ANSWER: If two sides and the included angle of one triangle are congruent to
two sides and the included angle of another triangle, then the triangles are
congruent.
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