Rectangle
Rectangles are parallelograms with four right angles.
Example 1
![Picture](/uploads/1/5/9/5/15954846/1368901338.jpg)
This scene in the the movie Harry Potter and the Order of the Phoenix takes place when Uncle Vernon is yelling at Harry because he thinks Harry performed a spell on Dudley. In this scene, and owl swoops into the living room through the window with a letter for Harry from the Ministry of Magic. The envelope of the letter is shaped like a rectangle.
"But at that precise moment a screech owl swooped in through the kitchen window. Narrowly missing the top of Uncle Vernon's head, it soared across the kitchen, dropped the large parchment envelope in its beak at Harry's feet, and turned gracefully, the tips of its wings just brushing the top of the fridge, then zoomed outside again and off across the garden." -Harry Potter and the Order of the Phoenix, page 26
Example 2
![Picture](/uploads/1/5/9/5/15954846/1368932403.jpg)
This scene in the the movie Harry Potter and the Order of the Phoenix takes place in the Ministry of Magic in the Department of Mysteries. In this scene, Harry and Mr. Weasley are just passing the Minister of Magic (Cornelius Fudge) and Draco's father (Lucius Malfoy). The bricks on the walls, floor, and ceiling are shaped like rectangles.
"Mr. Weasley broke off in mid-sentence. They had just reached the ninth-level corridor, and Cornelius Fudge was standing a few feet away from them, talking quietly to a tall man with sleek blond hair and a pointed, pale face. The second man turned at the sound of their footsteps. He too broke off in mid-concersation, his cold gray eyes narrowed and fixed upon Harry's face. ' Well, well, well...Patronus Potter,' said Lucius Malfoy coolly." -Harry Potter and the Order of the Phoenix, Pages 153-154