Secondary Mathematics

Angles formed in Major and Minor segment of a circle  
Angle in a Semicircle 
Angle subtended by an arc at cente and at any point on circumference 
Corresponding angles  
The sum of two adjacent angles formed by a ray standing on a line 
Vertically opposite angles of two intersecting lines 
Perpendicular from Centre of circle to a Chord 
Angles subtended by equal chords at centre of a circle 
The Diagonals of a Parallelogram Bisecting Each Other 
Angle in same segment of a circle 
The length of tangents from a fixed point to a circle