Q. 31

Side BC of ΔABC has been produced to D on left hand side and to E on right hand side such that ABD = 125° and ACE = 130°. Then A = ?

A. 65°

B. 75°

C. 50°

D. 55°

Answer :

ABD + ABC = 180 (Linear pair of angles)

ABC = 180o – 125o=55o

ACE + ACB = 180 (Linear pair of angles)

ACB = 180o – 130o=50o

As we know that

ACB + ABC + BAC = 180o

BAC = 180 – 55 – 50


Rate this question :

How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.
Related Videos
Quiz | Lines and Angles43 mins
Lines and Angles45 mins
NCERT | Angle Sum Property44 mins
Quiz | Angle Sum Property of Triangle40 mins
Quiz | Imp. Qs. on Lines and Angles30 mins
NCERT | Intersecting and Non Intersecting lines)41 mins
NCERT | Discussion on Lines And Angles45 mins
Solving Important Proofs of Lines and Angles44 mins
NCERT | Lines and Angles Part - 142 mins
Do You Know About Lines and Angles52 mins
Try our Mini CourseMaster Important Topics in 7 DaysLearn from IITians, NITians, Doctors & Academic Experts
Dedicated counsellor for each student
24X7 Doubt Resolution
Daily Report Card
Detailed Performance Evaluation
view all courses