First, study these web animations:
Using a Protractor to Measure Angles at: http://www.mathopenref.com/constmeasureangle.html
Animation: Using a Protractor to Draw an Angle at: http://www.mathopenref.com/constdrawangle.html
Use a protractor to measure the specified angles in the diagram above:  
the measure of $\,\angle BAC\,$ is __________ 
the measure of $\,\angle CAD\,$ is __________ 
the measure of $\,\angle BAD\,$ is __________ 
Two of your angle measures should sum to the third. Check that this is true: 
Using the diagram below:
