From commentary on Sudarya-lahari by Laksmidhara.
Attribute to the Tantric 'Right Hand Path'. The instructions are complicated and somewhat obscure, and it is not obvious that a yantra can be constructed in this fashion without a lot of luck or an example to work from.
This method potentially results in perfect intersections (marma-sthana)
Inner eight-pointed figure
- A. Draw isosceles triangle A with apex pointing down and vertical line through the apex and centre of base. Place the bindu on this line near the apex of A.
- B. Above the bindu, draw hiorizontal through the sides of A to form the base of triangle B also drawn with apex pointing down.
- C. Draw horizontal through apex of A to form base of triangle C with apex pointing up and sides passing through the intersections of the sides of A and the base
of B.
Inner ten-pointed figure (antar-dasara):
- D. Produce base of A both ways to form base of triangle D with apex pointing down and sides passing through the ends of base of C.
- E. Produce base of C both ways to form base of triangle E with apex pointing up and sides passing through the ends of base of A and B.
- A1. Produce sides of A to meet horizontal through apex of C.
- C1. Produce sides of C to meet horizontal through apex of B.
Outer ten-pointed figure (bahir-dasara):
- F. Produce base of A1 both ways to form base of triangle F with apex pointing down and sides passing through the ends of base of E and C1.
- G. Produce base of C1 both ways to form base of triangle G with apex pointing up and sides passing through the ends of base of D and A1
- A2. Produce sides of A to meet horizontal through the apex of E.
- C2. Produce sides of C to meet horizontal through the apex of D.
Fourteen-pointed figure (caturdasara)
- H. Produce base of A1/F both ways to form base of triangle H with apex pointing down and sides passing through the ends of base of G and C2. (The circle is not mentioned.)
- J. Produce base of C1/G both ways to form base of triangle J with apex pointing up and sides passing through the ends of base of F and A2.
- F1. Produce sides of F to meet horizontal through apex of E.
- G1. Produce sides of G to meet horizonal though apex of D.
- A3. Produce sides of A to meet horizontal through apex of G.
- C3. Produce sides of C to meet horizontal through apex of F.