Answers to Math Exercises: Triangles and Properties of a Triangle 
P = 12 cm, A = = 6.93 cm^{2}, α = β = γ = 60°, α' = β' = γ' = 120°
α = β = 43°30', γ = 93°
6 cm
45°
a = 3 dm, b = 4 dm, α = 36°52', β = 53°08'
b = = 11.66 cm, m_{b} = = 10.3 cm
a) h = 8.31 m
 MN  = 2( 6 +) = 16.9 cm
a = b = 16 cm, c = 28 cm
 ∠ ACD  = 27°
α = 108°, β = 54°, γ = 18°
a = 15 cm, b = 22 cm, c = 17 cm, α = 42°54', β = 86°38', γ = 50°29'
α = 45°, β = 60°, γ = 75°, b = = 1.73, c = 1.93
h = 325.7 m
w = 14.6 m
γ = 61°03', a = 30.28, b = 35.87, c = 33.94
P = 3 + = 4.73, A = = 0.87
a = 18.41 cm, b = 14.86 cm, c = 6.51 cm
b = 15.24, c = 10.66, α = 32°04', γ = 42°21'
A = 3.85
yes, γ = 91°18' > 90°
a = 20.86, b = 55.31, c = 68.06, γ = 119°32'
105.16 N
d_{1} = 12.54 cm, d_{2} = 7.14 cm
a = = 14.2, b = = 9.67, c = = 17.18
The triangle is rightangled.
r = 3
r = 17 cm
a = 13, h = = 9.23, e = 10, f = 24
b = = 3.75, c = = 6.25
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