1.When the sum of the measures of two angles is that of a straight angle and if one of them is acute then the other should be.
 a. acute angle b. Obtuse angle c. c. right angle 
 Peter has a mass of 12.5kilograms. John is 5.8kilograms heavier than Peter. 
 What is the mass of John? 
 a.18.3 kg b. 6.7 kg c. 7.3 kg