An isosceles triangle has two angles that are the same size. These angles are referred to as the base angles even though the orientation of the triangle can mean they are not at the bottom of the ...

Discusses the properties and types of triangles, explaining that a triangle is a closed figure with three sides and angles. It categorizes triangles into equilateral, isosceles, scalene ...

The repose angle is the angle of the isosceles triangle that has the same surface like the projected image of the powder heap. This isosceles triangle matches with the perfect cohesiveness heap shape.