Question

Which of these must be congruent in order for two circles to be congruent

1. Circumference
2.radius
3.area
4.diameter

Answer 1

Correct options are:

1. Circumference

2.radius

3.area

4.diameter

Explanation:

Two figures are congruent if you can pick one and then place it on top of the other one in such a way that the two exactly overlay each other.

In other words,two figures are congruent if they are the exact same shape and size.

Only circles that have the exact same size (as measured by matching radius, diameter, circumference, or surface area) are congruent.

Hence, the correct options are:

1. Circumference

2.radius

3.area

4.diameter

Answer 2

Any of the above

Explanation:

Any one of the given parameters defines the size of the circle, so any or all of them will have the same value for congruent circles.