Tutorial+3+-+Angles+and+Object+Properties

**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 || [[image:gip-manila/angle.png]] || 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 upper-left of the //Graphics view//. Apply similar colors to congruent angles.

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 * 4 ||  || To disallow reflex angles, right click on angle //A*// (right click the sector), and select //Object Properties// from the pop-up 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. ||