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Study
Types of Triangles: by angles
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Name this triangle.
acute
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Okay!
Name this triangle.
right
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Okay!
Name this triangle.
right
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Okay!
lines that meet at 90 degree angle
perpendicular lines
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Which triangle?
right angled
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Name this triangle.
obtuse
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Which triangle?
Isosceles
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triangles with 2 sides equal in length
isosceles triangle
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Name this triangle.
acute
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triangle with all 3 sides equal in length
equilateral triangle
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Which triangle?
Scalene
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a triangle with all angles smaller than 90 degrees
acute triangle
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Name this triangle.
obtuse
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Okay!
Which triangle?
right angled
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Okay!
Which triangle?
right angled
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Okay!
Which triangle?
Equilateral
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same size and same shape
congruent
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Name this triangle.
obtuse
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Okay!
Which triangle?
Equilateral
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Which triangle?
Scalene
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Okay!
Which triangle?
Scalene
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Okay!
Which triangle?
Scalene
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Okay!
a triangle with one angle larger than 90 degrees
obtuse triangle
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Name this triangle.
right
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Okay!
Which triangle?
right angled
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Okay!
Name this triangle.
acute
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Name this triangle.
right
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Okay!
describe a characteristic or feature of a shape
attributes
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Which triangle?
Scalene
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a shape with 3 sides, 3 angles
triangle
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Which triangle?
Equilateral
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Okay!
Name this triangle.
obtuse
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Okay!
Name this triangle.
acute
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Okay!
Name this triangle.
acute
Oops!
Okay!
Which triangle?
Isosceles
Oops!
Okay!
Which triangle?
Isosceles
Oops!
Okay!
Name this triangle.
obtuse
Oops!
Okay!
Which triangle?
Isosceles
Oops!
Okay!
a triangle with one 90 degree angle
right triangle
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Okay!
Which triangle?
Scalene
Oops!
Okay!
triangle with no sides equal in length
scalene triangle
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Okay!
Name this triangle.
right
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Okay!
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