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Chapter 4 Vocab (ALL WORDS)
I did this set before the chapter started, so remember all the words may not be on the test. I may change the set, just come over and ask me.
15
Mathematics
11th Grade
01/02/2012
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Term
acute triangle
 Definition
three acute angles
Term
equiangular triangle
 Definition
three congruent acute angles
Term
right triangle
 Definition
one right angle
Term
obtuse triangle
 Definition
one obtuse angle
Term
equilateral triangle
 Definition
three congruent sides
Term
isosceles triangle
 Definition
at least two congruent sides
Term
scalene triangle
 Definition
no congruent sides
Term
auxiliary line
 Definition
a line that is added to a figure to aid in a proof
Term
corollary
 Definition
a theorem whose proof follows directly from another theorem
Term
interior
 Definition
the set of all points inside the figure
Term
exterior
 Definition
the set of all points outside the figure
Term
interior angle
 Definition
formed by two sides of a triangle
Term
exterior angle
 Definition
formed by one side of the triangle and the extension of an adjacent side
Term
remote interior angle
 Definition
an interior angle that is not adjacent to the exterior angle
Term
congruent polygon
 Definition
if corresponding angles and sides are congruent then two polygons are congruent
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