An angle is a measure of a turn, measured in degrees or °. There are 360° in a full turn. You can find out the size of an angle using a protractor. An angle less than 90° is acute. An angle ...

The flat-four fires at 180-degree intervals, and its V angle is 180 degrees, which leads to a balance of firing forces. The flat-four, in fact, balances all three of the different types of forces.

Converting 90 degrees to radians demonstrates the process clearly: 90 × π/180 = π/2 radians. This result makes sense geometrically; 90 degrees is a quarter of a full rotation, and π/2 is ...