The circumference of a circle = \(\pi d\) or \(2\pi r\). Look at the sector of the circle shown below. To calculate the length of the arc, we need to know what fraction of the circle is shown.

Circle theorems are properties that are true for all circles, regardless of their size. There are six theorems to learn and recognise. Questions can have a combination of theorems. It is important ...

THIS work of Prof. Smith's has a “very practical purpose,” viz, “to present in simple and intelligible form a body of geometric doctrine, acquaintance with which may fairly be demanded of ...

Find out how they can change if their sides stay the same length. Create new shapes that always have the same side lengths. Experiment with the circle as a tool to make new sides. Dynamic geometry ...

The problem involves a subfield called geometric measure theory, in which sets of objects are generalized in an advanced way using properties ... through the lens of geometry can shake loose ...