Tuesday, July 23, 2013

1:59 PM
Q : What is the perimeter of ABCDE?















Video Explanation





Text Explanation




FAQ: I only calculated AB + BC + CD + DE. Why doesn't the question ask for the perimeter of ABCDEA?

When we say "perimeter," it refers to the combined length of all sides of a shape. We can only get the perimeter of a closed space.

At the same time, when we refer to a shape using the names of its points (e.g. ABCDE), it refers to the whole shape, including all sides. We don't need to include any point twice in the name :-)

0 comments :

Post a Comment