1.5 describe angle pair relationships
DESCRIPTION
Lesson to be used with complementary and supplementary angles topic.TRANSCRIPT
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COMPLEMENTARY & SUPPLEMENTARY
ANGLES
1.5 Describing angle pair relationships:
Mr. SaucedoMilby High School
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OBJECTIVE
We will use angle relationships to find angle measures.
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VOCABULARYADJACENT ANGLES
Definition Two angles that share a common vertex and common
side.
Visual
adjacent non adjacent
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VOCABULARY:COMPLEMENTARY ANGLES
Definition Two angles that add up to 90 degrees.
Visual
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VOCABULARYSUPPLEENTARY ANGLES
Definition Two angles that add up to 180 degrees.
Visual
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CHECKPOINT
TRUE OR FALSE? Angle ABC and CBD are complementary. Angle KHJ and IHJ are supplementary Angle CBD and angle KHJ are adjacent.
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CHECKPOINT
True or false? <ABC and <DBC are
complementary?
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HOW TO REMEMBER?
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CHECKPOINT
What is the relationship between angles 1 and 2?
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GUIDED EXAMPLES
Given that angle a is a complement of angle b and that m<a = 68, find m<b.
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GUIDED EXAMPLES
Given that m<2 is a supplement of <2, and m<2 = 56, find m<1.
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GUIDED EXAMPLES
Given that the two angles below are complementary; and that m<FED=4x + 8, and m<CBA = x + 2, find the measure of each angle.
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BIG QUESTIONS
How do we identify (or prove) that two angles are complementary?
How do we identify (or prove) that two angles are supplementary?
Adjacent angles share a _____ and a ________.
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INDEPENDENT WORK
TEXTBOOK, Page 38
PROBLEMS: 1, 4, 5, 6, 8, 10, 12, 14, 16, 18, 34, 35, 36, 37, 38.
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HOMEWORK
WORKBOOK, Page13
PROBLEMS: 1, 3, 5, 7, 17, 22, 23, 24, 25, 29
Pre-AP: Add problem #38.