parallelepiped

"The train tracks are two parallel lines that run through the entire town. "

"The teacher used a rectangular whiteboard to draw a diagram. "

"In geometry class, we learned to identify parallelograms by checking if their opposite sides were parallel and the same length. "

"My brother's opinion is the opposite of mine on the best way to study for the exam. "

"The being in the classroom was quiet today. "

"I have a house and a car."

"The science textbook included a figure showing the different stages of a plant's growth. "

"The doctor examined the cuboid in my foot after I twisted my ankle. "

"The wooden desk is a solid piece of furniture. "

"My sister's phone number contains the digit six. "

"The teacher praised the students' similar answers on the math quiz. "

"That girl has a pretty face."