How can we lead a healthy life? What is good for our body and soul? What kind of exercise can make us - or keep us fit? Find out more on In Good Shape, the health show on DW. Informative and ...
A triangle is a polygon. It is a closed 3-sided shape made up of straight lines. The ‘tri-’ part of the word triangle means three. A triangle has 3 sides and 3 angles. Interior angles are the angles ...