A.∠A+∠B=∠C | B.∠A:∠B:∠C=3:4:5 | ||||||
C.(b+c)(b-c)=a2 | D.a=
|
5 |
3+4+5 |
1 |
2 |
3 |
A.2:3:4 | B.3:4:6 | C.3:4:5 | D.4:6:7 |
1 |
a2 |
1 |
b2 |
1 |
h2 |
A.0 | B.1 | C.2 | D.3 |
A.三内角之比为1:2:3 | B.三边之比为1:
| ||||
C.三边长为41,40,9 | D.三边长为
|
A.a=7,b=24,c=25 | B.a=1.5,b=2,c=2.5 |
C.a=3,b=4,c=5 | D.a=5,b=8,c=17 |
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