OpenStudy (anonymous):

PLEASE HELP!!!!! WILL MEDAL AND FAN!!!!!!!!!! I PROMISSSE C;

3 years ago
OpenStudy (anonymous):

In a geometry class, the students were asked to prove the theorem below by contradiction: Theorem: A quadrilateral cannot have three and only three right angles. Heather begins the proof with an assumption. Which statement will she most likely use as an assumption? Let one angle of a quadrilateral be acute and the other three angles obtuse. Let all angles of a quadrilateral measure 90° each. Let all angles of a quadrilateral be acute. Let one angle of a quadrilateral be obtuse and the other three angles measure 90° each.

3 years ago
OpenStudy (yanasidlinskiy):

Let one angle of a quadrilateral be acute and the other three angles obtuse. in proof by contradiction, we assume the opposite of what we need to prove.

3 years ago