Select the term that best describes the statement.

a triangle is obtuse provided all the angles have a measure greater than 90 degrees.

conjunction
disjunction
negation
conditional

The term that best describes the given statement above is the third option which is negation. In geometry, a negation statement is the opposite of a given mathematical statement. If a statement is true, then its negation is false. And if a statement is false, then its negation is true. The given statement above is false, therefore, it is a negation of the true statement.