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Mathematics 9 Online
jameswelch33:

The four vertices of an inscribed quadrilateral divide a circle in the ratio 1 : 2 : 5 : 4. The four angles of the quadrilateral are °, °, °, and

jameswelch33:

who knows the answer

Hero:

How many degrees are there in a circle?

Hero:

@jameswelch33

jameswelch33:

i dont know

Hero:

The measure of a circle is 360 degrees. Now we have the quadrilateral inscribed in the circle which splits the circle into four angles of the ratio 1:2:5:4.

Hero:

This basically means that we can let the smallest angle of the inscribed quadrilateral represent \(x\) degrees. Then the next larger angle will be \(2x\), then the next larger angle is \(4x\) and the largest angle is \(5x\).

Hero:

Since we know the angles must add to 360 degrees we can write \(x + 2x + 4x + 5x = 360\) then solve for \(x\).

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