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Q: ABCD is a quadrilateral does A plus B plus C plus D always is 360 degrees?
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Quadrilateral abcd is a parallelogram in which angle a equals 40 degrees b plus d equals degrees?

280


Quadrilateral abcd is a parallelogram in which b equals 100 degrees.a plus c equals?

160 degrees.


When can this be true abcd is a quadrilateral does a plus b plus c plus d equals 180?

No; it is false. The sum of all the angles of a quadrilateral always equals 360o.


ABCD is a quadrilateral.does a plus b plus c plus d equals 180 degrees?

No, it equals 360. All interior angles for any quadrilateral are always 360. Usually adjacent angles add up to 180 degrees.


If quadrilateral ABCD is a parallelogram in which angle B equals 100 degrees how many degrees would be a plus c?

A = C = 180 - B = 80 So A + C = 160


How do you prove that In a quadrilateral ABCD prove that AB plus BC plus CD plus DA 2( AC plus BD )?

You cannot prove it since it is not true for a general quadrilateral.


How do you find the missing measure of a quadrilateral if the measures are 110 70 and 110?

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.


What is the area of the quadrilateral ABCD in which AB is 4.3 mm BC is 3.4 mm CD is 3.8 mm angle ABC is 95 degrees and angle BCD is 115 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


Given a paralleogram ABCD angle A equals 30 plus 5x and angle D equals 15 plus 10x What is x?

9 degrees


Find x if ABCD below is a square and angle A equals 5x plus 50?

Angle A = 90 degrees = 5x + 50 So 5x = 40 or x = 8


What is an angle formed outside a quadrilateral?

It is an exterior angle and an interior angle plus an exterior angle add up to 180 degrees


How many terms are in the polynomial ABCD plus e - H2?

4