In quadrilateral ABCD, angle A and angle c complement each other. If angle A and angle B are equal to 6:4:5 than angle D, calculate the degree of angle C Urgent````

In quadrilateral ABCD, angle A and angle c complement each other. If angle A and angle B are equal to 6:4:5 than angle D, calculate the degree of angle C Urgent````

Angle a + angle c = 180
Angle A: angle B: angle d = 6:4:5
Angle a + angle B + angle c + angle d = 360
The solution is as follows
Angle a = 120
Angle B = 80
Angle c = 60
Angle d = 100
So angle c equals 60 degrees

In the quadrilateral ABCD, angle D equals angle B equals 90 ° and angle c minus angle a equals 50 ° to find the degree of angle A and angle C

Angle c = 115 degrees, ∠ a = 65 degrees, indicating that the sum of internal angles of quadrilateral is 360 degrees
∠C-∠A=50°,∠C+∠A=360°-90°-90°