Is a rhombus a rectangle

Every square is a rhombus, and a rhombus can be a square, if all its angles are 90 degrees. Thus, a rhombus can be a rectangle (if the angles of the rhombus are all 90 degrees), and a rectangle can be a rhombus (if the sides of the rectangle are all equal length).

Step-by-step explanation:

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Step-by-step explanation:

It is given that a number, x, rounded to 2 significant figures is 1300.

It is possible if,

1. The value of x is greater than of equal to 1250 and less than or equal to 1300.

i.e.,     ...(1)

2. The value of x is greater than of equal to 1300 and less than 1350.

i.e.,       ...(2)

On combining (1) and (2), we get

1350 is not included in the error interval for x.​

Interval notation is .

Therefore, the error interval for x is .