Complete and show the following.​
a ABCD is a rhombus and AC} is one of its diagonals.
Without assuming parallel sides, explain why Δs ABC and ADC are congruent.
b Deduce from a that ABCD is a parallelogram.

Complete and show the following a ABCD is a rhombus and AC is one of its diagonals Without assuming parallel sides explain why Δs ABC and ADC are congruent b De class=