Aline drawn from one corner of a rectangle to the opposite corner is called

The corner of a rectangle is called the vertex of the rectangle.

Joining any two adjacent vertices is the side of the rectangle.

Joining any two vertices which are opposite to each other is called a diagonal of the rectangle.

The length of both the diagonals of a rectangle is always equal.

she played for 18.75 hours.

step-by-step explanation:

if she played 2/4 of a hour on tuesday. and there is 60 minutes in an hour and 60 divided by 4 is 7.5. and she played 2/4 of an hour on thursday then again 60 divided by 4 is 7.5, you add 7.5+7.5=56.25. now you have to do 1/4 of an hour, it equals 3.75. now you have to add them all up. 3.75+7.5+7.5=18.75

i hope this and i hope you get it right. it took me a while to get this done for you. : )