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Does a triangle with 20 degrees 30 degrees and 130 degrees an acute triangle?
No. An acute triangle only has angles less than 90 degrees. A triangle with a 130 degree angle is obtuse.
Is is possible for an isosceles triangle to be an acute triangle?
Yes, but a triangle is acute only if all three of its angles are acute (< 90o).An isosceles triangle can be an acute triangle, but it doesn't have to be.An acute triangle can be an isosceles triangle, but it doesn't have to be.That depends on the sizes of its angle because an isosceles triangle has 2 equal sides and 2 equal angles which could be 70 degrees, 70 degrees and 40 degrees which are all acute angles that add up to 180 degrees.
If a triangle has one acute angle is the triangle necessarily acute?
No, an acute triangle must have all 3 angles under 90 degrees. A triangle can have an acute angle and still be a right triangle or an obtuse triangle.
Can an acute triangle be an equiangular triangle?
Only when it has 3 equal acute angles of 60 degrees
A triangle with all angles measuring less than 90 degrees?
A triangle with all angles measuring less than 90 degrees?That's an 'acute' triangle.
