Yes, every diameter of a circle is also a chord. A diameter is defined as a special type of chord that passes through the center of the circle and connects two points on the circle’s circumference. Since all diameters connect two points on the circle, they satisfy the definition of a chord, which is any line segment that connects two points on the circle.
On the other hand, not every chord of a circle is a diameter. A chord can be any line segment connecting two points on the circumference, but it only qualifies as a diameter if it specifically passes through the center of the circle. Therefore, while every diameter is a chord, not every chord is a diameter.