You can't tell. The only thing you know is that two of them are equal,
and the third angle is (180 degrees minus the sum of the first two).
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there are three angles on an isosceles triangle
No. They are usually different.An isosceles triangle has two equal angles and two equal adjacent sides. An isosceles triangle with three 60° angles is the equilateral triangle.Only one isosceles triangle, which has two 45° angles, includes a right angle and is called an isosceles right triangle.
An isosceles triangle is any triangle with at least two sides of equal length. Logically, an isosceles triangle also has at least two angles of equal size. An equilateral triangle is a triangle with three equal sides and three equal angles (all of which are 60 degrees). Since it has at least two equal sides then it is therefore also an isosceles triangle. This is no different to the way in which a square is also a rectangle, or a circle is also an ellipse. They are simply special cases of the general case.
The base angles of an isosceles triangle are congruent.
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.