Possible Clues:

• Acute or obtuse measurements
• They might be acute or obtuse
• Protractor measurements
• How the old people get their degrees
• Sounds as if there are no sacks on them with degrees
• "I teach geometry, so I know all the __": math professor's quip
• They were with the Saxons, to a certain degree
• Opinions offered by those who met Pope Gregory
• Camera positions
• Points of view that may be right