Classify Triangles by Angles
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Triangles can be classified on the basis of angles as follows:
|
Acute triangle
All three angles are less than 90° |
Right triangle
One angle is exactly 90° |
Obtuse triangle
One angle is more than 90° |
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The correct answer is
Remember :
The smallest number is the one that comes first while counting.
Solution :
To arrange the given numbers in order from smallest to greatest, find the smallest number among all the given numbers.
21,27,23
21 is the smallest number.