MYou just described an equilateral triangle which is in fact isosceles and acute, and additional any isosceles triangle with a vertex angle of less than 90 is acute as the base angles are congruent and all three angles must add to180
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If it has 2 equal acute angles and 1 obtuse angle then it is an isosceles triangle.
It can be but does not have to be.
Only when it has 2 equal acute angles and 1 obtuse angle that it is an isosceles triangle
An Isosceles triangle has 2 or 3 acute angles.
Answer: Yes, because of the two angles have to be exactly equal in order to be isosceles. And no isosceles has 3 acute angles and then it will be equilateral triangle Answer: No, the isosceles triangle can either have two acute angles, or all three can be acute.