CK12 - Geometry

6. Sketchan equiangulartriangle.Whatmustbe true aboutthe sides?


7. Sketchan obtuseisoscelestriangle.


8. True or false:A right trianglecan be scalene.


9. True or false:An obtusetrianglecan havemorethan one obtuseangle.


10. One of the answersin 8 or 9 is false.Sketchan illustrationto showwhy it is false,and changethe false
    statementto makeit true.

Answers

1. 
   

   A is an acutescalenetriangle.

   
   


2. 
   

   B is an equilateraltriangle.

   
   


3. 
   

   C is a right isoscelestriangle.

   
   


4. 
   

   D is a scalenetriangle.Sincewe don’tknowanythingaboutthe angles,we cannotassumeit is a right

   
   

triangle,eventhoughone of the angleslookslike it may be 90
o
.

5. 
   

   E is an obtusescalenetriangle.

   
   


6. 
   

   If a triangleis equiangularthen it is also equilateral,so the sidesare all congruent.

   
   


7. 
   

   Sketchbelow: