Question

ΔBCD is rotated 80° clockwise about the origin to form ΔKLM. If m∠KLM=30° , what is m∠BCD?

Answer 1

won't it also be 30 and the triangles are congruent and based on the information
<BCD is corresponding to <KLM

just a thought

Answer 2

as we did not make any change in the triangle so it s side length and angle will remain same

Answer 3

so they are congurrent triangles that is they will have same angle between corresponding sides

Answer 4

BCD and KLM are congurrent so <BCD=<KLM= 30
<CDB=<LMK
<DBC=<MKL