Which postulate or theorem can be used to prove that ABC ≈ DCB?

Stacey filled her 1/2 cup of measuring cup seven times to have enough flour for a cake recipe how much flour does the cake recipe calls for

What is the point of inflection for the function f(x)=2cos4x on the interval (0, pi/2)

Asequence is a function whose is the set of natural numbers