answer 1 angle 1……symmetric answer 2 ab = tu ……
TRANSCRIPT
5-MINUTE CHECK
Answer 1 Angle 1……Symmetric
Answer 2 AB = TU ……...
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
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.
EXAMPLE OF RIGHT ANGLE CONGRUENCE
MORE CONGRUENCY THEOREMS
TOOLS FOR PROOFS
PAIR SHARE
Given
Vertical Angle CongruenceTransitive Prop
Vertical Angle Congruence
Transitive Prop
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
QUICK WRITE…EXPLAIN
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
ON YOUR OWN…WHITE BOARDSSOLVE FOR THE VARIABLES & ANGLES.
X = 7 and Y = 9……so Angle Measures are 36 and 144
WHAT ARE THE ANGLE / VARIABLE RELATIONSHIPS?
Linear Pair Supplementary
Complementary Angles
Linear Pair Supplementary
Complementary Angles
PERFORMANCE TASK SOLVE & EXPLAIN THE ANGLE RELATIONSHIP
1 2
X = 9……Complementary X= 11 and Y= 17………. Vertical
EXIT SLIPS…….WHITE BOARDS
Complementary Angles Y= 9
WHAT HAVE YOU LEARNED TODAY??
Students will analyze & apply properties of special pairs of angles to solve angle diagrams.
HOME WORK
Page(s) 128-129
#1-30 all
Quiz coming soon……HW Packs due tomorrow!!