Isosceles triangle have two equal angles2
None, unless it's also isosceles (1.e. 45 degrees for the other two sides).
a scalene triangle has no lines of symmetry
There are infinitely many such shapes:Take any odd-sided regular polygonMove one vertex away from the side opposite it in a perpendicular direction any distance you like.The resulting shape has one line of symmetry (from the vertex moved to the centre of the opposite side) and no rotational symmetry.Done to an equilateral triangle (a regular "3-agon") this creates an isosceles triangle.
3 vertices
An isosceles triangle definitely has three axes of symmetry
two
one
A triangle, in general has none. An isosceles triangle has 1 axis of symmetry while an equilateral triangle has 3 axes.
That will depend on what type of triangle it is because an equilateral triangle has 3 lines of symmetry whereas an isosceles triangle has only 1 line of symmetry but a scalene triangle has no lines of symmetry.
An isosceles triangle has only 1 line of symmetry.
The answer is one because two of the sides in an isosceles triangle are the same. If this is true, then only the line bisecting down in-between these two lines can be an axis of symmetry.
An isosceles triangle has 1 line of symmetry
1
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an isosceles has only 1 line of symmetry
threethere are 3 axes of semmetry in a equilateeral triangle