Use a ruler.
Use a ruler.
The sides of a triangle add up to the perimeter.
We use the law of Cosines to be able to find : 1. The measure of the third side, when the measure of two sides and the included angle of a triangle ABC are known. 2. The measure of any angle, when the measure of the three sides of a triangle ABC are known.
An equilateral triangle
Use a ruler and measure one side only. All sides will measure the same if the triangle is equilateral.
An equilateral triangle has three equal sides. The angles of an equilateral triangle measure 60 degrees each, but the sides can be any length.
A ruler. Add a line to make the angle into a triangle, measure the sides and use trigonometry.
equilateral
it is an issosolesse triangle
Equilateral triangle
An equilateral triangle.