Congratulations on being named Time magazine’s ‘Man of the Year’ — you definitely deserve it. As you have probably heard, I’m a big fan of yours!Donald Trump letter to Vladimir Putin
Right triangle (Wikipedia)A right triangle or right-angled triangle, sometimes called an orthogonal triangle or rectangular triangle, is a triangle in which two sides are perpendicular forming a right angle (1⁄4 turn or 90 degrees).
