Question

In a quadrilateral ABCD, ZA = 45°. ZB = 135 and 2C = D. Find the measures​

Answer 1

Answer:

A planet is an astronomical body orbiting a star or stellar remnant that is massive enough to be rounded by its own gravity, is not massive enough to cause thermonuclear fusion, and – according to the International Astronomical Union but not all planetary scientists – has cleared its neighbouring region of planetesimals.

Answer 2

Step-by-step explanation:

In a quadrilateral, the sum of all angles is 360°.

therefore,

A+B+C+D=360°

It's given that 2C=D, A=45°, B=135°

Let angle c be x, so angle d will be 2x.

Put these values into the above equation.

45° + 135° + x° + 2x° = 360°

180° + 3x° = 360°

3x° = 360°-180°

3x° = 180°

x = 60°

Answer:

A= 45°

B= 135°

C= 60°

D= 120°