They say that every time a bell rings, an angle gets its rays. In this lesson, refresh your memory about various angle pair relationships and the different parts of a circle.

Complementary and Supplementary Angles

Khan Academy. Duration_8_30

Find Measures of Complementary Angles

Khan Academy. Duration_8_30

Find Measures of Supplementary Angles

Khan Academy. Duration_2_36

Challenge Problems Q6. Duration_6_38

Challenge Problems Q7. Duration_6_55

Geometry 4(A) Distinguish between undefined terms, definitions, postulates, conjectures, and theorems