Advertisement Remove all ads

If Below Fig, If Ab || Cd and Cd || Ef, Find ∠Ace. - Mathematics

Advertisement Remove all ads
Advertisement Remove all ads
Advertisement Remove all ads

If below fig, if AB || CD and CD || EF, find ∠ACE.

Advertisement Remove all ads

Solution

Since EF || CD

∴ EFC + `∠`ECD = 180°                [co-interior angles are supplementary]

⇒ `∠`ECD =180° -130° = 50°

Also BA || CD

⇒`∠`BAC = `∠`ACD = 70°             [alternative angles]

But

`∠`ACE + `∠`ECD = 70°

⇒ `∠`ACE = 70° - 50° = 20°

Concept: Pairs of Angles
  Is there an error in this question or solution?

APPEARS IN

RD Sharma Mathematics for Class 9
Chapter 10 Lines and Angles
Exercise 10.4 | Q 3 | Page 46

Video TutorialsVIEW ALL [1]

Advertisement Remove all ads
Share
Notifications

View all notifications


      Forgot password?
View in app×