Intercept Theorem
	- http://upload.wikimedia.org/wikipedia/en/a/af/Intercept_theorem_2.jpg
Converse of parallel interceptors
Angle bisector theorem
	- http://hotmath.com/hotmath_help/topics/triangle-angle-bisector-theorem.html
Centro- similarity transformation
Similarity in Triangles and Quadrangles
Practise on height and leg theorem
Ratio of similarity of sides, perimeters and areas
Ratio of surface area and volumes of similar shapes in the space
Ratio of similarity of similar figures- consolidation
Revision on theorems connected to cirle
Inscribed and central angles theorem and proof
Loci of vertices of inscribed angle to a chord
Contruction of loci of points with same inscribed angle
Relationship between tangents, secants and chords in a circle
Cyclic and circumscribed quadrilaterals-consolidation