The acute triangle is composed of three acute angles, the same as saying that all three of its angles are smaller than 90Â°. 1  A right triangle (or right-angled triangle) has one 90Â° internal angle (a right angle). 2  The side opposite to the right angle is the hypotenuse; it is the longest side in the right triangle.
Product Code: 881E. The Monark 881E rehab trainer performs as either an arm or leg ergometer, making it especially useful for people who have been hospitalized and require rehabilitation based on reliable measuring methods.
But while the rowing machine, also called an ergometer, is a calorie buster (about 280 calories in 30 minutes for an 130-pound woman) and a good leg and core workout, improper form can lead to back injuries if you're not careful. Read on for our tips on proper rowing form.