# 1Multiple ChoiceWhat is the standard equation of a circle centered at the origin?x² + y² = r²(x - h)² + (y - k)² = r²x² + y² = h² + k²(x + h)² + (y + k)² = r²
# 2Multiple ChoiceIf a circle has a center at (3, 4) and radius 5, what is its equation?x² + y² = 25(x + 3)² + (y + 4)² = 25(x - 3)² + (y - 4)² = 5(x - 3)² + (y - 4)² = 25
# 3Multiple ChoiceWhich of the following points lies on the circle with the equation x² + y² = 16?(4, 0)(0, 4)(3, 2)(2, 3)