Describe what you know about an equilateral triangle in 2 complete sentences

An equilateral triangle is a triangle where all the sides are equal and all the interior angles are of 60 °. The example of the equilateral triangle is a regular polygon.

Explanation:

As the equilateral triangle has all three sides the same size, it is needed one length of one side and we can calculate the perimeter. As the angles are of 60 ° the sum of all angles is 180°.

because the two particles have an equal charge, the charges will cancel out and give the atom an overall charge of 0. so, if at atom has 35 protons in the nucleus, we could expect it to have 35 electrons orbiting that nucleus.