answer 1 angle 1……symmetric answer 2 ab = tu ……
TRANSCRIPT
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5-MINUTE CHECK
Answer 1 Angle 1……Symmetric
Answer 2 AB = TU ……...
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Students will analyze & apply properties of special pairs of angles to solve angle diagrams. Why? So you can describe angles in a home, as seen in Ex 44.Mastery is 80% or better on 5-minute checks
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KEY VOCABULARY
Complementary Angles- A pair of angles whose sum is 90.
Supplementary Angles- A pair of angles whose sum is 180.
Linear Pair- A pair of adjacent angles whose sum is 180.
Vertical Angles- Two Angles whose sides form opposite rays.
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EXAMPLE OF RIGHT ANGLE CONGRUENCE
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MORE CONGRUENCY THEOREMS
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TOOLS FOR PROOFS
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PAIR SHARE
Given
Vertical Angle CongruenceTransitive Prop
Vertical Angle Congruence
Transitive Prop
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GUIDED PRACTICE WITH A PARTNER
Angle 3 = 112, Angle 2 & 4 = 68
Angle 4 = 67, Angle 1& 3 = 113
Angle 2 = 71, Angle 1&3 = 109
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QUICK WRITE…EXPLAIN
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WITH A PARTNER: FIND THE VALUE OF THE VARIABLES & THE MEASURES OF EACH ANGLES BELOW
X=5 & Y=26Angles are 74 & 106
X=10 & Y=40Angles are 130 & 50
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ON YOUR OWN…WHITE BOARDSSOLVE FOR THE VARIABLES & ANGLES.
X = 7 and Y = 9……so Angle Measures are 36 and 144
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WHAT ARE THE ANGLE / VARIABLE RELATIONSHIPS?
Linear Pair Supplementary
Complementary Angles
Linear Pair Supplementary
Complementary Angles
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PERFORMANCE TASK SOLVE & EXPLAIN THE ANGLE RELATIONSHIP
1 2
X = 9……Complementary X= 11 and Y= 17………. Vertical
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EXIT SLIPS…….WHITE BOARDS
Complementary Angles Y= 9
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WHAT HAVE YOU LEARNED TODAY??
Students will analyze & apply properties of special pairs of angles to solve angle diagrams.
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HOME WORK
Page(s) 128-129
#1-30 all
Quiz coming soon……HW Packs due tomorrow!!