Similarity between rotational, reflection and translation symmetry

What are the measures of ∠a, ∠b, ∠c and ∠d? explain how to find each of the angles. measure need asap

James adds two numbers a + b. sally adds the same two numbers but reverse the order b + a what property of addition assures us that james and sally will get the same sum

The owner of the plant nursery where you were tells you to fill 350 ml bottles from a 30 l from a fertilizer