Download Answers to Abbreviations meanings and definitions C

Answers to Abbreviations meanings and definitions
C: Circumference: perimeter of a circle
AA: Angle-Angle: a way to prove similar triangles
Sin, Cos, Tan, Csc, Sec, Cot: Sine, Cosine, Tangent, Cosecant, Secant, Cotangent: the 6
trigonometric ratios
Point, line, plane: 3 undefined terms on which all of Euclidean geometry is based
Rt: Right triangle: a triangle with a 90 degree angle
Isos: Isosceles triangle: a triangle with at least 2 congruent sides
Eq: Equilateral triangle: a triangle with all 3 sides congruent and all 3 angles are 60 degrees
R: Radius: the distance from the center of a circle to a point on the circle
D: Diameter: a segment (chord) with both endpoints on the circle and that passes through the
center of the circle
Theorem: Statement that has and can be proven true
Postulate or Axiom: Statement that is accepted as true without proof (this is the definition for
2 of the terms from the previous list)
Identity: An equation that is true no matter what values are chosen
ASA: Angle-Side-Angle: a way to prove congruent triangles
A: Area: amount of space inside a 2-dimensional figure
SA: Surface area: the total area around the exterior surface of a solid, the sum of the areas of
all of the faces of a 3-dimensional solid
AAS: Angle-Angle-Side: a way to prove congruent triangles
V: Volume: amount of space inside a 3-dimensional solid
Km, cm, mm, m, in, ft, yd, mi: Kilometer, centimeter, millimeter, meter, inches, feet, yards,
miles: units of distance
Corollary: Statement that is incidentally proved while proving another
SAS: Side-Angle-Side: a way to prove similar or congruent triangles
SSS: Side-Side-Side: a way to prove similar or congruent triangles
Converse: Statement formed by interchanging the hypothesis and conclusion of the original
statement
HL: Hypotenuse-Leg: a way to prove right triangles congruent
Inverse: Statement that contradicts the original statement usually by simply adding the word
“not” in front of the conclusion or a function that reverses the effect of another operation
Contrapositive: Statement formed by negating both the hypothesis and the conclusion, and
then interchanging the resulting negations
CPCTC: Corresponding parts of congruent triangles are congruent: used to prove that two parts
of congruent triangles are congruent after having already proven that the 2 triangles are
congruent