An isosceles triangle has base angles measuring 25 degrees each. what is the measure of the vertex angle?

A triangle's sum must add to 180 degrees. If two of the angles, summed, equal 50 degrees, then the vertex angle must equal 130 degrees. So, the vertex angle equals 130 degrees.

This is what i found “an explicit formula designates the nth term of the sequence, as an expression of n (where n = the term's location). it defines the sequence as a formula in terms of n. this example is an arithmetic sequence(the same number, 5, is added to each term to get to the next term).” i hope this you for what your looking for. can you plz mark me brainliest?