Reverse Pythagorean theorem

Given are the lengths of the sides of the triangles. Decide which one is rectangular:

Δ ABC: 66 dm, 60 dm, 23 dm Wrong answer
Δ DEF: 20 mm, 15 mm, 25 mm Wrong answer
Δ GHI: 16 cm, 20 cm, 12 cm Wrong answer
Δ JKL: 58 cm, 63 cm, 23 cm Wrong answer
Δ MNO: 115 mm, 92 mm, 69 mm Wrong answer




Final Answer:

z0 =  3
z1 =  2
z2 =  2
z3 =  3
z4 =  2

Step-by-step explanation:

Δ\ 66,\ 60,\ 23:\ \ 23^2\ +\ 60^2\ ≠\ 66^2\ \ \ldots\ nie\ je\ right \ \\ z_{0} = 3
Δ 20, 15, 25:  152 + 202  =  252  … je right z1​=2
Δ 16, 20, 12:  122 + 162  =  202  … je right z2​=2
Δ\ 58,\ 63,\ 23:\ \ 23^2\ +\ 58^2\ ≠\ 63^2\ \ \ldots\ nie\ je\ right \ \\ z_{3} = 3
Δ 115, 92, 69:  692 + 922  =  1152  … je right z4​=2

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You need to know the following knowledge to solve this word math problem:

geometryarithmeticplanimetricsGrade of the word problem

 
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