Using trigonometry and Pythagoras' theorem the diagonal length of AC works out as 10.05 cm rounded to two decimal places.
What id actually says is... What fits in the blank? Diagonal AC of Parallelogram ABCD _____ bisects angle A and angle C.
none of these are correct
280
B 110 degrees C 70 degrees D 110 degrees
Angle A = 90 degrees = 5x + 50 So 5x = 40 or x = 8
What id actually says is... What fits in the blank? Diagonal AC of Parallelogram ABCD _____ bisects angle A and angle C.
never
never
If you mean quadrilateral ABCD then by using Pythagoras' theorem diagonal AC is 5 cm and using the cosine rule angle ADC works out as 41.04 degrees.
If you mean quadrilateral ABCD then by using the cosine rule diagonal AC equals 5.71 cm and diagonal BD equals 6.08 cm both rounded to two decimal places.
none of these are correct
none of these answers are correct
50
90 degrees because it's a right angle, they're always 90 degrees
for a+ NEVERIn a parallelogram opposite angles are equal. Thus angle c = angle a = 40o.The sum of all the angles in a quadrilateral is 360o, so:angle a + angle b + angle c + angle d = 360o=> 40o + angle b + 40o + angle d = 360o=> angle b + angle d = 280o.
280
The answer will depend on what x is!