Mention the concepts in these lessons discussed:The Circle and its Parts, Relationships between Chords and Arcs, Properties of Central and Inscribed Angles and Intersecting Chords and their Properties and the calculations that took place in the logo (Its in the picture).

51

step-by-step explanation:

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

36

step-by-step explanation:

dilation scale factor 2: starting with δabc, draw the dilation image of the triangle with a center at the origin and a scale factor of two. notice that every coordinate of the original triangle has been multiplied by the scale factor (x2). dilation with scale factor 2, multiply by 2.