Rhombus Diagonal Length: Verify if DC = 8 cm in a 7 cm Side Rhombus

Question

A rhombus has a side length measuring 7 cm.

Is DC equal to 8 cm?

00:00 Is DC equal to 8?

00:03 In a rhombus all sides are equal

00:09 Let's substitute the side value according to the given data

00:16 And we'll see that DC equals 7, not 8

00:25 And this is the solution to the question

Let's recall the properties of a rhombus. In a rhombus, all sides are equal to each other, therefore DC cannot be equal to 8 cm.

Additionally, in a rhombus, there are 2 pairs of parallel and equal sides. Since the side parallel to AB is CD, it must be equal to 7 cm.