Review for Quiz on the types of Triangles

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• Review for Quiz on the types of Triangles

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• The angle sum of a triangle equals 180 degrees.

Angle A Angle B Angle C 180 degrees
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• At least two angles of a triangle are always
  acute, less than 90 degrees

Angles B and C are both acute.
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• A right triangle has one angle equal to 90
  degrees.

Angle B has a measure of 90 degrees.
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• A right triangle with lengths A, B, C follow the
  Pythagorean Theorem,
• A B C

2 2 2
The Pythagorean Theorem only applies to right
triangles.
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• An acute triangle has all angles less than 90
  degrees.

Angles A, B, and, C Are all less than 90 degrees.
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• An obtuse triangle has one angle greater than 90
  degrees.

Angle B has a measure greater than 90 degrees.
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• An isosceles triangle has two sides that are
  equal in length.

Lengths a and b are the same while the length of
c differs
a
b
c
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• An equilateral triangle has all three sides equal
  to one length.

a
b
length of a length of b length of c
c
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• A scalene triangle is a triangle that has three
  different side lengths.

a
c
b
No two lengths are equal.
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