Look at the theater on First Ave, between Alder and Birch. If the corners of the theater are all right angles, is the theater a parallelogram? Why or why not?

yes

Step-by-step explanation:

A parallelogram is a quadrilateral is whose angles are all right angles

yes

Step-by-step explanation:

Parallelograms are sides parallel to each other and in the diagram it shows a square and parallelograms can consist of square rectangles rhombus, etc...

54 kilometers per hour

step-by-step explanation:

according to rules:

1 km = 1000 meter

which means that 1 meter = 1/1000 km

1 hour = 3600 second [ as 1 hour = 60 min = 60 *60 seconds ]

which means that 1 second = 1/3600 hour

therefore, 1 kilometer/hour =

thus to convert 15 meter per second to kilometer per hour, we multiply 15 to 3.6 kilometer/hour.

15 meter/second=   which is the required answer.

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step-by-step explanation: