First: Sides are not acute or obtuse. ANGLES are acute or obtuse.
An acute triangle has to have all angles acute. Examples:
60, 60, 60
70, 60, 50
45, 50, 85
45, 45. 90
30, 60, 90
But if one of the angles is obtuse (>90 degrees), then the other two must be acute. Of course, *this* triangle would not be called an acute triangle, because one of its angles is abtuse; it would be called an obtuse triangle.
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it is an acute triangle.
It will be a right angle triangle and the other sides will have acute angles.
It's acute. Sum the squares of the shorter two sides and compare to the square of the longest side. If the sum is less, the triangle is obtuse. If they are equal, the triangle is right angle. If the sum is more, the triangle is acute. 132 + 152 = 169 + 225 = 394 172 = 289 Sum is more so triangle is acute.
An acute angled scalene triangle.
First you would square the length of each of the sides. You'd add the squares of the smaller two numbers. If they are smaller than the square of the biggest side, then the triangle is obtuse. If their sum is bigger, then the triangle is acute. If they are equal, then the triangle is a right triangle.Example:length of sides-23, 34, 49232+342__492529+1156__24011685