Question

“Find the measure of angle 1 if angle CUB=78. Name the special pair of angles formed.”

Answer 1

$\\ \rm\longmapsto <CUB=<CUS+<BUS$

$\\ \rm\longmapsto <1+48=78$

$\\ \rm\longmapsto <1=78-48$

$\\ \rm\longmapsto <1=30$