n ≅ r
Post on 05-Jan-2016
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N≅ R K≅ S M≅ Q L≅ P
90o
12 in
60o
congruent
corresponding parts
80o 3 cm
100o
4 cm
ABC ≅ LMK by SAS HGJ ≅ QPN by SSS
The congruent sides needs to be written in the proper order.
(5x + 15) = 105 -15 -15 5x = 90 5 5 x = 18
These are congruentby SSS
x - 6 = 4 +6 +6 x = 10
These are congruentby ASA
2x + 6 = 32 -6 -6 2x = 26 2 x = 13
These are congruentby ASA
2x - 24 = x -x -x x - 24 = 0 +24 +24 x = 24
These are congruent bySAS
These are congruent bySSS
Equality and congruence mean that something is the same.
Equality is used with numbers.
Congruency means that something is the same size.
90 + 90 + x + x + 105 = 540 285 + 2x = 540 -285 -285 2x = 255 2 2 x = 127.5
109 + 72 + 76 + x = 360 257 + x = 360 -257 -257 x = 103
90 + 90 + 101 + 101 + x = 540 382 + x = 540 -382 -382 x = 158
(18-2) 180 18
16 180 18
16 180 18
2880 18
160= = = =o
oo
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