The geometrical drawing can be called Shri yantra, Sri-yantra, Navayony Chakra, Nava-chakra, Sri-Chakra, Shri-chakra, and my favorite name is Sri Yantra (because this is simple). Bhupura (the outer square with four gates), Mekhala (three concentric circles inside Bhupura), and Trailokyamohana chakra (yellow or colorful space between Bhupura and Mekhala) are four terms before we look at rings of lotus.
Sarvasaparipuraka chakra ((the outer ring of sixteen lotus petals) and Sarvasankshobhana chakra (the inner ring of eight lotus petals) seem good enough for naming them easy too.
Sarvasaubhagya-dayaka chakra (the first 14-pointed star polygon inside Mekhala), Sarvarthasadhaka chakra (the outer 10-pointed star polygon), Sarvaraksha-kara chakra (the inner 10-pointed star polygon), Sarva-rogahara chakra (the 8-pointed star polygon), Sarvasiddhi-prada chakra (the primary triangle, red or empty), and Sarvananda-maya chakra (the central dot) are other six terms to make the end of the first description.
Twelve terms (4+2+6) are good to begin, right?
For reference: Sri-Chakra: Its Yantra, Mantra and Tantra by Prof. S.K.Ramachandra Rao (Second Edition, Delhi, 2008 pp.26-49) was used.
I really don’t want to use English translations instead of Sanskrit terms because it makes back tracking of ideas so difficult (and I mean not only Sanskrit words but ultra modern Chinese and Japanese publications also) and almost impossible without special (actually, huge) background in languages and cultures. So, (1) I use Latinize simplified form of Sanskrit without diacritical signs of pronunciation and (2) don’t dream to use Devanagari for the same reason: do not make the gape between me and people greater (believe or not, it is great enough already, just look careful all my posts here 🙂
Frankly, I do it following my aged instinct and not for the goal to harm somebody’s feeling at all.