Question

A quadrilateral has angles measuring 100° 90° 90° find the measure of its fourth angle

Answer 1

9514 1404 393

Answer:

  80°

Step-by-step explanation:

The sum of angles in a quadrilateral is 360°, so the missing angle is ...

  4th angle = 360° -100° -90° -90° = 80°

The measure of the fourth angle is 80°.