Question

State the correspondence between the sides and angles if ∆ABC ≅ ∆RST​

Answer 1

is

a hard

Quartz the crystalline form

of Silicon

dioxide (sio2) It is

brittle and colourless

Solid. When quartz is heated

above its

melting point (about

16000) and cooled rapidly

amorphous solid called

quartz glass result- Give reason?

ans me