there are three angles on an isosceles triangle
An acute scalene triangle has none. An acute isosceles triangle has one and an [acute] equilateral has three.
It doesn't matter if a triangle is isosceles, scalene, obtuse, acute... There are always 3 angles in a triangle (which add up to 180).
3
One acute angle
There is 180 degrees in every triangle.
3 lines * * * * * None if it is acute angled scalene One if it is acute angled isosceles and Three if it is equilateral.
there is 1 line of simmetry An equilateral triangle has three. An acute isosceles has one and an acute scalene has none.
Triangles can be classified based on their sides and angles. Based on sides, triangles can be equilateral (all sides are equal), isosceles (two sides are equal), or scalene (no sides are equal). Based on angles, triangles can be acute (all angles are less than 90 degrees), obtuse (one angle is greater than 90 degrees), or right (one angle is exactly 90 degrees).
Im assuming your question is How many acute angles does the isosceles triangle has. It should have 2
None. If there was a right angle then it would not be called an acute triangle.
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