Objective: To use the Angle tool, Styling Bar and Object Properties.Tools: Angle
No 
Tool 
Instructions 
1 

Open the Tutorial 2 file. Use the View menu to hide the Algebra view. 
2 

To measure angle BAC, select the Angle tool, and click points B, A, C in that order. Notice that an angle symbol appears on angle A. Use the same tool to measure the remaining interior angles. For the mean time, ignore the reflex angles. 
3 

Click the angles and change their colors on the Styling Bar located at the upperleft of the Graphics view. Apply similar colors to congruent angles.

4 

To disallow reflex angles, right click on angle A* (right click the sector), and select Object Properties from the popup menu. 
5 

In the Object Properties window, click the Basic tab, and uncheck the Allow Reflex Angle check box, and click the Close button. Repeat the process to disallow reflex angles on other interior angles. 


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