[net.puzzle] Geometric problem

flinn@seismo.UUCP (E. A. Flinn) (03/30/84)

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Given the isosceles triangle ABC, with angles (in degrees) 
ACB = 20, ABC = BAC = 80, BAE = 60, and ABD = 50: find angle CED.


			. C
		       . .
		      .   .
		     .     .
		    .       .
		   .	     .
		  .	      .
		 .	       .
		.		.
	       .		 .
	      .			  .
	     .			   .
	    .			    .
	   .		            .. E
	  .            .          .   .
	 .   .                  .      .
      D	. .                  .          .
       .       .         .               .	 
      .              .                    .
     .            .        .               .  
    .          .               .            .
   .        .                      .         .
  .     .                              .      .
 .  .                                      .   .
................................................. 
A                                               B