A triangle that has two sides that are equal is called an . triangle.

isosceles triangle

Step-by-step explanation:

a triangle with two sides that are the same length are called an isosceles triangle.

An isosceles triangle therefore has both two equal sides and two equal angles.The name drives from a Greek ISO (same)and skelos(leg).A triangle with all sides equal is called an equilateral  triangle,and a triangle with no side is called a Scalene triangle.

Step-by-step explanation:

51

step-by-step explanation:

73-22=51 the   mass number minus the amount of protons gives you the amount of neutrons