82.5k views
3 votes
Find the measure of the missing angle.

Find the measure of the missing angle.-example-1

1 Answer

6 votes

Explanation:

  • 21°+90°+a=180°
  • 111°+a=180°
  • a=180°-111°
  • a=69°
User Jpangamarca
by
5.9k points
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.