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).
a scalene triangle
right angle triangle
45 degrees is an angle, not a triangle.A triangle containing an angle of 45 degrees can be any kind of triangle except an equilateral triangle.
It doesn't ever fall outside of a triangle.
Either a scalene triangle or an isosceles triangle.
It depends on what kind of triangle.
Any kind of triangle can be made in a rectangle.
The kind of triangle with two sides the same length is an isosceles triangle.
The Penrose triangle.
a scalene triangle
right angle triangle
45 degrees is an angle, not a triangle.A triangle containing an angle of 45 degrees can be any kind of triangle except an equilateral triangle.
It doesn't ever fall outside of a triangle.
Either a scalene triangle or an isosceles triangle.
an equaladderal triangle
a scalene triangle
An equilateral triangle.