Which of the following must be a square? a. a figure whose diagonals are congruent and meet right angles b. a figure whose diagonals are congruent and meet at right angles c. a figure whose sides are parallel and meet at right angles d. a figure whose sides are congruent

Option (B).

Step-by-step explanation:

A square is a type of quadrilateral in which opposite sides are parallel and equal. All sides of square are equal. The angles of square are equal and each angle is 90°.

Diagonals of square are equal and bisect each other at right angles. Hence, the diagonals are congruent and bisect each other at right angles,

Therefore option (B) is correct.

answer:

it is general formula that is used to write value to its excet position

a11 a12 a13

a21 a22 a23

it is the example of order 2 by 3 matrix in this

a11 means value occur in 1 st row 1st column

a12 means value occurs in 1st row 2nd column

a13 means value occur in 1st row and 3rd column

a21 means value occurs in 2nd row and 1st column

a22 means value occurs in 2nd row and in 2nd column

a23 means value occurs in 2nd row and in 3rd column

18.75 gallons

step-by-step explanation: