Triangle Side Verification: Is DC a Side of Triangle BDC?

Question

True or false:

DC is a side of the triangle BDC.

00:00 Determine whether DC is a side in the given triangle BDC

00:03 Identify the sides of triangle BDC

00:07 Mark the side with the two letters at the beginning/end of the line

00:11 These are the sides of triangle BDC

00:15 Therefore, we can determine that DC is part of triangle BDC

00:18 This is the solution

Let's determine if DC is a side of triangle BDC:

First, we need to identify the triangle BDC:

Vertices of triangle BDC are: $B, D,$ and $C$ .
Sides of triangle BDC are the line segments that connect these points. Namely, these sides are $BD, DC,$ and $BC$ .

Since $DC$ is one of the line segments connecting the vertices of triangle BDC, it indeed constitutes one of its sides.

Therefore, we conclude that the statement is true: DC is a side of the triangle BDC.

True