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CHS geometry 2015-2016--vocabulary list 5 definitions
definition flashcards to accompany vocabulary list 5
11
Mathematics
10th Grade
05/19/2016

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Term
acute angle
Definition
Iff an angle measures more than 0 degrees and less than 90 degrees, then the angle is a(n) __________.
Term
obtuse angle
Definition
Iff an angle measures more than 90 degrees and less than 180 degrees, then the angle is a(n) __________.
Term
right angle
Definition
Iff an angle measures 90 degrees, then the angle is a(n) __________.
Term
acute triangle
Definition
Iff all of a triangle’s interior angles are acute, then the triangle is an a(n) __________.
Term
obtuse triangle
Definition
Iff exactly one of a triangle’s interior angles is obtuse, then the triangle is a(n) __________.
Term
right triangle
Definition
Iff one of a triangle’s interior angles is a right angle, then the triangle is a(n) __________.
Term
hypotenuse
Definition
Iff a side of a right triangle is opposite the right angle, then the side is called the __________ of the right triangle. (By “opposite” we mean across from, not adjacent to.)
Term
leg
Definition
Iff a side of a right triangle is one of the sides that form the right angle, then the side of the right triangle is called a __________ of that right triangle.
Term
Pythagorean theorem
Definition
Iff a triangle is a right triangle, then the sum of the squares of the measures of the two shorter sides of the triangle equals the square of the measure of the longer side of the triangle. This is the __________.
Term
Pythagorean triple
Definition
Iff three natural numbers a, b and c satisfy the Pythagorean theorem, then they form a(n) __________.
Term
Pythagorean inequality
Definition
A(n) __________ is relationship between the squares of the measures of the sides of a triangle, where a and b represent the measures of the shorter sides of the triangle, and c represents the measure of the longest side of the triangle. c2 > a2 + b2 indicates that the triangle is an obtuse triangle. c2 < a2 + b2indicates that the triangle is an acute triangle.
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