Question

(quick) What is m∠RST?

Answer 1

`132^(\circ)`

Explanation:

`\triangle UST \cong \triangle USR` by HL. So, by CPCTC,
`m\angle UST=66^(\circ)`.

`\therefore m\angle RST=66^(\circ)+66^(\circ)=132^(\circ)`