Geometry For Enjoyment And Challenge
Geometry For Enjoyment And Challenge
91st Edition
ISBN: 9780866099653
Author: Richard Rhoad, George Milauskas, Robert Whipple
Publisher: McDougal Littell
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Chapter 3.6, Problem 14PSC
To determine

To Find: The m2 or mABC from the given figure

Expert Solution & Answer
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Answer to Problem 14PSC

The m2 or mABC = 60°

Explanation of Solution

Given information: In the given figure AB¯ , AC¯  are legs of isosceles ΔABC and m1 = 5x , m3 = 2x +12

Concept used: vertically opposite angles, adjacent angles forming linear pair.

Calculation: We know that the legs of an isosceles triangle represents its equal sides and the angles containing those legs are also equal. Thus, in the given question we have:

   AB¯= AC¯ ....................................(given)ABC = m2=ACB.......................................(i) also m1 =5x and m3 = 2x + 12 .......................(ii)

Also, in the given figure we have a pair of vertically opposite angles and we know that vertically opposite angles are always equal thus we can say that:

  m3= ACB= 2x+12 .............................................(iii)

Thus from (i) and (ii) we can write this relation as:

  m3 = m2 = 2x+12.............................(iv)

From figure we are given that 1 and 2 are adjacent angles standing on a straight line so they form a linear pair which means:

  m1+ m2 = 180° using values of m1 and m2 we get :5x + 2x + 12 = 180° 7x = 180° - 12 7x = 168° x = 24°

Substituting this value in (iv) we get:

  m2 = 2x+12 = (2×24) + 12 = 48 +12 =60°

Conclusion:

The m2 or mABC = 60°

Chapter 3 Solutions

Geometry For Enjoyment And Challenge

Ch. 3.2 - Prob. 6PSACh. 3.2 - Prob. 7PSACh. 3.2 - Prob. 8PSACh. 3.2 - Prob. 9PSACh. 3.2 - Prob. 10PSACh. 3.2 - Prob. 11PSACh. 3.2 - Prob. 12PSACh. 3.2 - Prob. 13PSACh. 3.2 - Prob. 14PSACh. 3.2 - Prob. 15PSACh. 3.2 - Prob. 16PSACh. 3.2 - Prob. 17PSBCh. 3.2 - Prob. 18PSBCh. 3.2 - Prob. 19PSBCh. 3.2 - Prob. 20PSBCh. 3.2 - Prob. 21PSBCh. 3.2 - Prob. 22PSBCh. 3.2 - Prob. 23PSBCh. 3.2 - Prob. 24PSBCh. 3.2 - Prob. 25PSBCh. 3.2 - Prob. 26PSCCh. 3.2 - Prob. 27PSCCh. 3.2 - Prob. 28PSCCh. 3.3 - Prob. 1PSACh. 3.3 - Prob. 2PSACh. 3.3 - Prob. 3PSACh. 3.3 - Prob. 4PSACh. 3.3 - Prob. 5PSACh. 3.3 - Prob. 6PSACh. 3.3 - Prob. 7PSACh. 3.3 - Prob. 8PSACh. 3.3 - Prob. 9PSACh. 3.3 - Prob. 10PSACh. 3.3 - Prob. 11PSACh. 3.3 - Prob. 12PSBCh. 3.3 - Prob. 13PSBCh. 3.3 - Prob. 14PSBCh. 3.3 - Prob. 15PSBCh. 3.3 - Prob. 16PSBCh. 3.3 - Prob. 17PSBCh. 3.3 - Prob. 18PSBCh. 3.3 - Prob. 19PSBCh. 3.3 - Prob. 20PSBCh. 3.3 - Prob. 21PSCCh. 3.3 - Prob. 22PSCCh. 3.3 - Prob. 23PSCCh. 3.4 - Prob. 1PSACh. 3.4 - Prob. 2PSACh. 3.4 - Prob. 3PSACh. 3.4 - Prob. 4PSACh. 3.4 - Prob. 5PSACh. 3.4 - Prob. 6PSACh. 3.4 - Prob. 7PSACh. 3.4 - Prob. 8PSBCh. 3.4 - Prob. 9PSBCh. 3.4 - Prob. 10PSBCh. 3.4 - Prob. 11PSBCh. 3.4 - Prob. 12PSCCh. 3.4 - Prob. 13PSCCh. 3.4 - Prob. 14PSCCh. 3.4 - Prob. 15PSCCh. 3.5 - Prob. 1PSACh. 3.5 - Prob. 2PSACh. 3.5 - Prob. 3PSACh. 3.5 - Prob. 4PSACh. 3.5 - Prob. 5PSACh. 3.5 - Prob. 6PSBCh. 3.5 - Prob. 7PSBCh. 3.5 - Prob. 8PSBCh. 3.5 - Prob. 9PSBCh. 3.5 - Prob. 10PSBCh. 3.5 - Prob. 11PSBCh. 3.5 - Prob. 12PSCCh. 3.5 - Prob. 13PSCCh. 3.5 - Prob. 14PSCCh. 3.6 - Prob. 1PSACh. 3.6 - Prob. 2PSACh. 3.6 - Prob. 3PSACh. 3.6 - Prob. 4PSACh. 3.6 - Prob. 5PSACh. 3.6 - Prob. 6PSACh. 3.6 - Prob. 7PSBCh. 3.6 - Prob. 8PSBCh. 3.6 - Prob. 9PSBCh. 3.6 - Prob. 10PSBCh. 3.6 - Prob. 11PSBCh. 3.6 - Prob. 12PSBCh. 3.6 - Prob. 13PSBCh. 3.6 - Prob. 14PSCCh. 3.6 - Prob. 15PSCCh. 3.6 - Prob. 16PSCCh. 3.7 - Prob. 1PSACh. 3.7 - Prob. 2PSACh. 3.7 - Prob. 3PSACh. 3.7 - Prob. 4PSACh. 3.7 - Prob. 5PSACh. 3.7 - Prob. 6PSACh. 3.7 - Prob. 7PSACh. 3.7 - Prob. 8PSACh. 3.7 - Prob. 9PSACh. 3.7 - Prob. 10PSACh. 3.7 - Prob. 11PSACh. 3.7 - Prob. 12PSBCh. 3.7 - Prob. 13PSBCh. 3.7 - Prob. 14PSBCh. 3.7 - Prob. 15PSBCh. 3.7 - Prob. 16PSBCh. 3.7 - Prob. 17PSBCh. 3.7 - Prob. 18PSBCh. 3.7 - Prob. 19PSBCh. 3.7 - Prob. 20PSBCh. 3.7 - Prob. 21PSBCh. 3.7 - Prob. 22PSCCh. 3.7 - Prob. 23PSCCh. 3.7 - Prob. 24PSCCh. 3.7 - Prob. 25PSCCh. 3.8 - Prob. 1PSACh. 3.8 - Prob. 2PSACh. 3.8 - Prob. 3PSACh. 3.8 - Prob. 4PSACh. 3.8 - Prob. 5PSACh. 3.8 - Prob. 6PSACh. 3.8 - Prob. 7PSBCh. 3.8 - Prob. 8PSBCh. 3.8 - Prob. 9PSBCh. 3.8 - Prob. 10PSBCh. 3.8 - Prob. 11PSBCh. 3.8 - Prob. 12PSBCh. 3.8 - Prob. 13PSBCh. 3.8 - Prob. 14PSBCh. 3.8 - Prob. 15PSBCh. 3.8 - Prob. 16PSCCh. 3.8 - Prob. 17PSCCh. 3.8 - Prob. 18PSDCh. 3 - Prob. 1RPCh. 3 - Prob. 2RPCh. 3 - Prob. 3RPCh. 3 - Prob. 4RPCh. 3 - Prob. 5RPCh. 3 - Prob. 6RPCh. 3 - Prob. 7RPCh. 3 - Prob. 8RPCh. 3 - Prob. 9RPCh. 3 - Prob. 10RPCh. 3 - Prob. 11RPCh. 3 - Prob. 12RPCh. 3 - Prob. 13RPCh. 3 - Prob. 14RPCh. 3 - Prob. 15RPCh. 3 - Prob. 16RPCh. 3 - Prob. 17RPCh. 3 - Prob. 18RPCh. 3 - Prob. 1CRCh. 3 - Prob. 2CRCh. 3 - Prob. 3CRCh. 3 - Prob. 4CRCh. 3 - Prob. 5CRCh. 3 - Prob. 6CRCh. 3 - Prob. 7CRCh. 3 - Prob. 8CRCh. 3 - Prob. 9CRCh. 3 - Prob. 10CRCh. 3 - Prob. 11CRCh. 3 - Prob. 12CRCh. 3 - Prob. 13CRCh. 3 - Prob. 14CRCh. 3 - Prob. 15CRCh. 3 - Prob. 16CRCh. 3 - Prob. 17CRCh. 3 - Prob. 18CRCh. 3 - Prob. 19CRCh. 3 - Prob. 20CRCh. 3 - Prob. 21CRCh. 3 - Prob. 22CRCh. 3 - Prob. 23CRCh. 3 - Prob. 24CR
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