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题库 / GMATLA-DS-38
In the triangle above, is ~$x>90$~?
(1) ~$a^2+b^2<15$~
(2) ~$c>4$~
Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
EACH statement ALONE is sufficient.
Statements (1) and (2) TOGETHER are NOT sufficient.
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1. 任意两条边的平方和>第三条边的平方，锐角三角形
2. 两条边的平方和=第三条边的平方，直角三角形
3. 有两条边的平方和<第三条边的平方，钝角三角形
Each statement alone is clearly insufficient.
When taken together:
If angle x were 90 degrees than we would have a2+b2=c2a2+b2=c2, since a2+b2