Which transformation preserves the property of a shape of a figure

Sheila wants to bake six muffins but the recipe is for 12 muffins . this means you only need half of the ingredients listed how much of the of each ingredient does she need? one cup and banana chips ,7 tablespoons oil , two eggs, 3/4 cups flour 1/4 cup walnuts show all you work and justify your answer using a baby toulmin.

What is the name of a polygon that has four congruent sides and theses angle measures 60,120,60,120?

3.4a=57.8 what is the the value of a