Angles on a Straight Line add up to 180°.
[b][br]Adjacent Angles-[/b] angles that measure [b]less than 90[/b] degrees[br][br][b]Right Angles-[/b] angles that measure[b] exactly 90[/b] degrees[br][br][b]Obtuse Angles-[/b] angles that measure [b]more than 90[/b] degrees[br][br][b]Straight Angles- [/b]angles that measure [b]exactly 180[/b] degrees
[br]a) Show an "acute" orange angle and an "obtuse" green angle[br][br]b) Show a green angle that is a "straight angle"[br][br]c) Show an orange angle and green angle that are both "right angles"[br][br]d) What do the green and orange angles add to? Give three examples.