Angles Complementary and Supplementary Angles Please take out your math journals, you will be taking notes If the slides go to fast, this presentations.

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Presentation transcript:

Angles Complementary and Supplementary

Angles Please take out your math journals, you will be taking notes If the slides go to fast, this presentations will be on my website,

Angles Review straight angle right angle acute angle obtuse angle

Angles Complementary Angles- Two adjacent angles that add up 90° or make a right angle. 25° + 65° = 90° These two angles are complementary to each other

Angles Supplementary Angles- Two adjacent angles that add up to 180°, or form a straight angle. 45° + 135° = 180° These two angles are supplementary to each other

How Can I Remember? C of C omplementary stands for C orner of a right angle = 90° S of Supplementary s tands for S traight angle = 180°

Guided Practice 1.What is the complementary angle of 43°? 2.What is the supplementary angle of 112°? 3.What is the supplementary angle of 60°? 4.What is the complementary angle of 26°? 5.What is the complementary angle of 85°? I will give you 5 minutes to work on these problems.

Answers 1.47° 2.68° 3.120° 4.64° 5.5°