Triangles
Triangles – Example 1: The sum of the inner angles of a triangle is \(180°\). So, \(120°\)\(+\)\(35^°\)\(=\)\(155^°\)\(→\)\(180^°\)\(-\) \(155^°\) \(=\) \(25^°\). The unknown angle is \(25^°\) Exercises for Triangles Find the measure of the unknown angle in each triangle. 1) 2) \(\color{blue}{70^°}\) \(\color{blue}{30^°}\) The Best Math Books for Elementary Students
How to Construct Triangles? (+FREE Worksheet!)
Constructing triangles – Example 1: Constructing triangles – Example 2: Solution: Draw a line,\(AB, 7cm\) long. Draw \({\angle}BAF\) of \(45^{\circ}\) Draw an arc of radius \(5cm\) with \(B\) as the center to cut the arc \(AF\) of \(BAF\) at \(C\). Join \(B\) and \(C\). Erase the arc and the extra length \(CF\) to obtain the required triangle \(ABC\) Exercises for Constructing […]