‘Angle Basics’ and ‘Naming Angles’
Angle is formed when two rays or two line segments are
joined with a common end point.
Vertex: Common end point
where two arms meet is called vertex of an angle.
Arms: Two rays or line
segments forming an angle are called arms.
can name angle as angle XYZ or angle Y. We use symbol to denote an angle.
we can write
1. We use capital letters to name an angle.
2. Letter in the middle denote the vertex of an angle.
3. We can
also use number in place of alphabet to name an angle.
Interior and Exterior of an angle