Waste less time on Facebook — follow Brilliant.

Proofs: Geometrical!

In triangle \(ABC\) are drawn trisectors (lines dividing angles into \(3\) equal parts). The trisectors closest to side \(BC\) which trisect angles \(B\) and \(C\) meet at the point \(A_1\); and in the same way we will define the points \(B_1\) and \(C_1\) (refer to the picture). Prove that triangle \(A_1B_1C_1\) is equilateral.

Note by Andrei Golovanov
1 year, 6 months ago

No vote yet
1 vote


Sort by:

Top Newest

Morley's trisector theorem Nihar Mahajan · 1 year, 6 months ago

Log in to reply


Problem Loading...

Note Loading...

Set Loading...