Question

When the angle of a joint increases, it produces movement. Which type of movement is it? extension rotation flexion revolution

Answer 1

It's called an Extension movement

One of the example is the joint in your elbow. If you straighten your arm, it will make the angle of the joint in your elbow to increase and create an extension movement

Another example is the joint in your hips

Answer 2

The type of movement where the angle of a joint would increase is called an extension movement. During this type of movement, you are basically extending the neighbouring places where the main locator of the extension can be found. As the other posted pointed out - a good example of such would be extending your arm.