All the angles are less than 900
One angle is equal to 900
has
one obtuse angle > 900
No equal sides
triangle
with 2 equal sides
triangle
with 3 equal sides
| Acute triangle All the angles are less than 900
|
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| Right triangle One angle is equal to 900 |
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| Obtuse triangle
|
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| Scalene triangle No equal sides |
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| Isosceles triangle
|
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| Equilateral triangle
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