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8.3 Prove that a Quadrilateral is a Parallelogram
HW pg. 526 #420 evens 1
January 09, 2013
Dec 218:29 AM
Bellwork1. Find the values of a & b in the .
2. Find the measure of <K in the .
3. Find the m<BCD & BD in the .
a12
3036
b+10
J M
64LK
B
A
C
D
100
37
E9
a = 42, b = 26
116
<BCD=43 , BD=18
8.3 Prove that a Quadrilateral is a Parallelogram
HW pg. 526 #420 evens 2
January 09, 2013
Dec 2112:45 PM
8.3 Show that a Quad is a Parallelogram
Ways to prove a quadrilateral is a parallelogram...
1. Show both pairs of opp. sides are // (definition)2. Show both pairs of opp sides are ≅. (theorem)3. Show both pairs of opp. < are ≅. (theorem)4. Show 1 pair of opp. sides are ≅ and //. (theorem)5. Show the diagonals bisect each other. (theorem)
8.3 Prove that a Quadrilateral is a Parallelogram
HW pg. 526 #420 evens 3
January 09, 2013
Dec 228:20 AM
8.3 Prove that a Quadrilateral is a Parallelogram
HW pg. 526 #420 evens 4
January 09, 2013
Dec 228:22 AM
8.3 Prove that a Quadrilateral is a Parallelogram
HW pg. 526 #420 evens 5
January 09, 2013
Dec 228:24 AM
8.3 Prove that a Quadrilateral is a Parallelogram
HW pg. 526 #420 evens 6
January 09, 2013
Dec 228:22 AM
8.3 Prove that a Quadrilateral is a Parallelogram
HW pg. 526 #420 evens 7
January 09, 2013
Dec 228:27 AM
8.3 HW pg. 526 #420 evens