Rectangular is an adjective and so there is no noun in the question.To put it another way, a rectangular what?
A cuboid.
You have to find one in he clubhouse or another place.
actually all edges of a rectangular prism are parallel to another edge
A light
rectangular prism
A rectangular prism or a hexahedron.
A foreign brick.
One you get on the power line ,the next by one of the cameras in the photo store, the other by the speaker in the school building,one on the solar system prodject in the school science room, another one beeing blown around by the clubhouse,and the last one inside the clubhouse.
You measure it, using a ruler of another measuring device.
A cube.
It is another name for the rectangular trigger fish and wedge tailed trigger fish.