Students are often unsure why angles in the same segment of a circle have to be equal. Colin Foster explains how to make it ...

Reverse mathematics seeks the best system of axioms required to prove a set of theorems. Its essence is to “work backwards”, using theorems as a starting point and proving that the axioms ...

Solution: After drawing isosceles triangle ABC and drawing altitude AD, we observed that BD = DC. So AD is also a median. EXERCISE 6.2 1. Find the value of the unknown exterior angle x in the ...

Circle theorems - Higher - Edexcel Circles have different angle properties described by different circle theorems. Circle theorems are used in geometric proofs and to calculate angles.

Circle theorems - Higher - AQA Circles have different angle properties described by different circle theorems. Circle theorems are used in geometric proofs and to calculate angles.