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uranmaximum [27]
3 years ago
11

The measure of an angle is 51°.

Mathematics
2 answers:
Bingel [31]3 years ago
6 0
Supplement of an angle is what must be added to that angle to get 180

51+supplement=180
minus 51 both sides
supplement=129

answer is C
Amanda [17]3 years ago
5 0
Here you need to know that supplement is Equal to 180

Here how u would do it
51+ x=180
solve for x
x=180 - 51
x= 129

So c is the answer to your question

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Answer:

  50°

Step-by-step explanation:

As usual, the diagram is not drawn to scale.

The chord divides the circle into two arcs that have a sum of 360°. If we let "a" represent the measure of the smaller arc, then we have ...

  a + (a+160°) = 360°

  2a = 200° . . . . . . . . . . . subtract 160°

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<em>Comment on this geometry</em>

Consider a different inscribed angle, one with vertex V on the circle and subtending the same short arc subtended by chord AB. Then you know that the angle at V is half the measure of arc AB. This is still true as point V approaches (and becomes) point A on the circle. When V becomes A, segment VA becomes tangent line <em>l</em>, and you have the geometry shown here.

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Read 2 more answers
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