An angle cannot have 8 sides. If you're thinking of a shape with 8 sides, that's an octagon.
A right angle triangle.
right angle triangle
For example, you might name an angle as "ABC", where "B" is the vertex, and "A" and "C" are points lying on the sides of the angle. If there are additional points on the same sides, you can substitute those points instead.
The two shorter sides are the legs.
An angle cannot have 8 sides. If you're thinking of a shape with 8 sides, that's an octagon.
you can name a vertex with b
A right triangle has three sides and one right angle.
A right angle triangle.
right angle triangle
Opposite and adjacent sides.
No angle has 10 sides. An angle has two sides.
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
For example, you might name an angle as "ABC", where "B" is the vertex, and "A" and "C" are points lying on the sides of the angle. If there are additional points on the same sides, you can substitute those points instead.
Exterior angles
The two shorter sides are the legs.
legs