examday

/TMUA

Consider the following statement about a pentagon $P$:

$(*)$ If at least one of the interior angles in $P$ is $108^\circ$, then all the interior angles in $P$ form an arithmetic sequence.

Which of the following is/are true?

• I. The statement $(*)$
• II. The contrapositive of $(*)$
• III. The converse of $(*)$