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jawab
1.
a, 9, 11, 13
9² + 11²  = 202
 13²  = 169
9²+11² > 13² = tumpul

b.8, 15, 17
8²+15² =64 +225 = 289
17² = 289
8² + 15² = 17² (siku siku)

c. 50, 120, 130
50² +120² = 16.900
130² = 16.900
50²+120² = 130² (siku siku)

d. 5, 12, 16
5²+12² =169
16² = 245
5² +12² < 16² (lancip)

e. 10, 20 , 24
10²+20² = 500
24²= 576
10² + 20² < 24² (lancip)

2)
a. 10, 12, 14
10²+12² = 244
14² = 196
bukan triple

b. 7,11,13
7²+11² = 170
13² = 169
bukan triple

c. 2 1/2 , 6, 6 1/2 = 5, 12, 13
triple