Question

What is measure CBD?

Answer 1

Answer: 55 degrees
Explanation:
So first, use the supplementary angle relation between angles ADB and CDB to find CDB.
Supplementary angles means that the two angles add up to 180. We can assume this as the line at the base of both angles is straight.
So yeah, this is it: 180-80= 100. So now you know CDB. Now to find CBD we will simply add up the angles that we currently have (100 and 25) and then subtract it from 180 as every triangle has angles that add up to 180 degrees.
180-100+25)=
180-125=55
So CBD is 55 degrees

Answer 2

Answer: 55 degrees

Explanation:

So first, use the supplementary angle relation between angles ADB and CDB to find CDB. Supplementary angles means that the two angles add up to 180. We can assume this as the line at the base of both angles is straight. So yeah, this is it: 180-80= 100. So now you know CDB. Now to find CBD we will simply add up the angles that we currently have (100 and 25) and then subtract it from 180 as every triangle has angles that add up to 180 degrees.

180-(100+25)=

180-125=55

So CBD is 55 degrees