It is a vertex.
the intesection of the two sides of an angle is the angle 's?
Not actually sides. Angles do not have sides, they have legs. All angle have two legs.
A square has 4 vertices. A vertex is the point at which the sides of an angle intersect. There are four corners or angle intersections for a square.
a quadrilateral where each angle is a right angle
The apex angle of the cone is the angle that the apex takes. This is measured by the two intersections the cone takes through a perpendicular plane defined by the apex and the center of the circular base.
In plane geometry, a shape with four sides, two of which are parallel and have the same length, cannot have a reflex angle.
You use the points of the vertex and on the two sides. For example a right angle with a vertex of A and two sides B and C. would be Angle BAC
It is called the vertex of the angle.
a triangle with two sides the same length and no right angle
It is a vertex.
vertex
a vertex