Answer:
a. opposite angles c. opposite sides
Step-by-step explanation:
A Rhombus is a parallelogram in which all the sides are equal.All the properties of paralleogram are true for a Rhombus.
Opposite angles of a rhombus have equal measure.
All the sides of a Rhombus are equal and hence its opposite sides are equal.
Among the given options optiona a and c are true for a Rhombus.