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3 years ago

What angles are supplementary angles?

Mathematics

1 answer:

marissa [1.9K]3 years ago

7 0

Supplementary angles, as you may recall, are two angles whose sum is 180°.

However, as you may also recall, 180° has the angle measure forming a line(or line segment, I don't remember).

But the two angles must be CONNECTED! And must form A LINE!

Thus:

The answer is IHF and GHF.

P.S. IXL, huh?

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3 years ago

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(a) 4.148 x 10^(12) ways

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Number of Repudiators (R) = 56

(a)

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$N= C^{D}_{5} * C^{R}_{5}\\N=\frac{56!}{5!(56-5)!} *\frac{44!}{5!(44-5)!} \\N=3,819,816*1,086,008\\N=4.148 *10^{12}$

(b)

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3 years ago

The octagon in the figure is equiangular and AB=AC Find m∠ACB .

Triss [41]

∠ACB = ∠ABC = 360°/8 = 45°

_____
∠ABC is an external angle of the octagon. Since it is equiangular, all external angles are equal. The sum of external angles of a convex polygon is always 360°, so one of 8 of those angles will be 360°/8 = 45°.

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3 years ago