# Draw a triangle with three right angles

##### *2020-02-29 06:42*

A triangle has three sides and three angles. The three angles always add to 180. A triangle is a three sided polygon.Feb 16, 2016 You can find the angle B from the arccos of 0. 75 and then use the fact that the three angles add up to 180 to find the remaining angle. However there is an infinite number of similar right triangles that have all three angles the same, so you need to know at least the length of one side. draw a triangle with three right angles

Sep 24, 2015 How does the Sum of Angles of a Triangle measure 180 degrees? Duration: 3: 09. Drawing a Right Angled Triangle Duration: 4: 00. KEMINGMATHS 13, 873 views. 4: 00.