“Why are there 360 degrees in a circle?” A regular reader recently asked me that question. My first response was to say “Because Miss Helland told me so.” Miss Helland was m… ...

National 5; Circle geometry Finding the angle at centre. Arc length is a fraction of circumference. Area of a sector is a fractions of the area of a circle. Both can be calculated using the angle ...

Circles, sectors and arcs - AQA Arc length Circles are 2D shapes with one side and no corners. The circumference is always the same distance from the centre - the radius.

Refraction is responsible for a rainbow’s colors. When sunlight enters a raindrop, it bends. White light, like sunlight, is comprised of a spectrum of different colored light. Each color exists at a ...