263,218 views
5 votes
5 votes
Find mZCEF if mZCEF= 2x + 30,mZDEC = x + 102, and mZDEF = 132°DEFA) 30°C) 410B) 29°D) 320

User Franbenz
by
3.0k points

1 Answer

17 votes
17 votes

1) Gathering the data

m∠CEF=2x +30

m∠DEC=x+102

m∠DEF=132

2) From the picture we infer that

m∠DEF = m∠CEF+m∠DEC

132 = m∠CEF +x +102

132-x-102=m∠CEF

m∠CEF=30

User Thomas Stock
by
2.7k points
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.