trapezoid

"The adjacent room to the classroom was used for storage. "

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

"The teacher asked us to draw a quadrilateral, so I drew a shape with four straight sides. "

"My daughter's teacher is very kind and helpful. "

"The carpenter measured the lengths of the wooden boards before building the bookshelf. "

"My family has a different ideal for my future than I do. "

"Footers appear at the bottoms of pages."

"The clumsy student fractured the test tube while rushing in the lab. "

"The rounded, smooth surface of the new classroom's ceiling is a convex. "

"The length of the classroom is 20 meters. "

"The teacher pointed to the map to show the students where the capital city was located. "

"My sister is a talented artist; she paints beautiful landscapes. "