Question

find the measure of all the angles of a parallelogram ABDE if angle B=60​

Answer 1

Answer:

If <D is 60°, then <B will be also 60°. [opposite angles of a parallelogram are equal] s <A=<C . <A+<D=180^ (sum of two angles in parallelogram is O^ ) We know that adjacent <A+6O^ =180^ <A=120^ so < C = 120 degrees