👉 Learn how to evaluate the tangent of an angle in degrees using the sum/difference formulas. To do this, we first express ...

👉 Learn how to solve for an unknown variable using parallel lines and a transversal theorems. Two lines are said to be ...

It is important to remember other angles rules, such as angles on a straight line add up to 180°, and to recognise angles in parallel lines. Make sure you are confident in applying Pythagoras’ theorem ...

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 to ...

Catherine Scarlett responds to an article about US teenagers who claim to have proved the theorem using trigonometry While it is heartening to see enthusiastic mathematical inquiry in young people and ...

Do you think there’s a triangle whose angles measure 41, 76 and 63 degrees? At first, answering this may seem easy. From geometry class we know that the sum of the measures of the interior angles of a ...

Pythagoras Theorem: This article explains the concept of Pythagoras Theorem and its converse. Know the definition, formula, proof, examples and applications of Pythagoras Theorem. Pythagoras Theorem: ...