PLEASE HELP Which statements describe a parallelogram that must be a square?
Select each correct answer.
parallelogram with four congruent angles
o parallelogram with congruent diagonals that are perpendicular
O parallelogram with four congruent sides
O parallelogram with four congruent sides and a right angle
O parallelogram with a pair of congruent consecutive sides

1e+27

step-by-step explanation:

by definition, an arc subtended by a central angle of some given measure has the same measure. so .

center (1,3) with radius 6

step-by-step explanation:

we must complete the square to find the center and radius of the circle.

first make sure the x and y squared terms have 1 as their coefficients. we also make sure x and y terms together.

we now create space between the x and y terms with parenthesis.

we complete the square by taking the middle terms -2x and the -6y - divide each and square them.

we add the squares to both sides.

simplify.

and write the quadratics in factored form.

the center is (h,k) or (1,3). the radius is the square root of 36 which is 6.

b

step-by-step explanation: