11
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If you happen to have a clock with a 7-segment LED display, you'll see
that ALL the numbers on it are made out of straight line segments.
330
Use a protractor and a straight edge but bear in mind that knowing the three angles will not uniquely determine the triangle - the length of the first line will force a choice between infinitely many similar triangles.
10 and 11
110 is composite. A prime number is a number that is divisible only by 1 and itself; it has no other factors. A composite number is a number that is divisible by more than 2 numbers. The factors of 110 are 1, 2, 5, 10, 11, 22, 55, and 110. Therefore, 110 is a composite number.
Four. 24, 48, 72, and 96