Which postulate or theorem can be used to prove that ΔABC ≅ ΔDCB?

the figures below are made out of circles, semicircles, quarter … find the area and the perimeter of each figure and give your answers as a completely simplified exact value in terms of π (no approximations). remember that we'll also have to cut whatever areas we get in half, since we're only dealing im pretty sure that is the right answer

step-by-step explanation:

34

step-by-step explanation:

2+2=4

4-5=-1

is that your