The one gives the answer will be marked as the brainliest. The size of the angle marked D in the diagram is.

40

Step-by-step explanation:

The angles are around a point

We know that the sum of angles around a point add p to 360 degrees

Also, opposite angles are equal, which makes the angle opposite to 160 also 160.

Thus D = 360-(160+160) = 360-320 = 40 degrees

Hope this helps

40°

Step-by-step explanation: since, 180° is a straight line, the distance between 180 and 160 is 20… and the angle covers one 20 and another 20 as you can see. One to the top of the straight line and one to the down. So by adding both 20 we get 40°.

step-by-step explanation: