Yes.
280
160 degrees.
No, it equals 360. All interior angles for any quadrilateral are always 360. Usually adjacent angles add up to 180 degrees.
Angle A = 90 degrees = 5x + 50 So 5x = 40 or x = 8
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280
160 degrees.
No; it is false. The sum of all the angles of a quadrilateral always equals 360o.
No, it equals 360. All interior angles for any quadrilateral are always 360. Usually adjacent angles add up to 180 degrees.
A = C = 180 - B = 80 So A + C = 160
You cannot prove it since it is not true for a general quadrilateral.
The four interior angles in a quadrilateral always equal 360 degrees when added together. So, 110 plus 70 plus 110 equals 290. Therefore, the answer is 70 degrees.
Using the cosine rule diagonal BD is 6.08 mm which splits angle 95 degrees into angles of 34.5 degrees and 60.5 degrees and so the area of the quadrilateral is:- 0.5*6.08*3.4*sin(34.5) plus 0.5*6.08*4.3*sin(60.5) = 17.232 square mm
9 degrees
Angle A = 90 degrees = 5x + 50 So 5x = 40 or x = 8
It is an exterior angle and an interior angle plus an exterior angle add up to 180 degrees
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