Analytic geometry

Promoting the study of Geometry Joining forces with institut-delbol.com, mouctar.org is publishing the first challenge. The callenge second part is now solved. No more answers will be accepted. There was no winner for this challenge.  

Promoting the study of Geometry Joining forces with institut-delbol.com, mouctar.org is publishing the first challenge. The callenge second part is now solved. No more answers will be accepted. There was no winner for this challenge. The […]

Promoting the study of Geometry Joining forces with institut-delbol.com, mouctar.org is publishing the first challenge. This challenge has two sections and points are calculated based on the level of difficulty for each section and question. Prize is […]

The Bretscheiner’s formula helps find the area of a non-cyclic quadrilateral, that cannot be inscribed in a circle, using only side lengths and possibly one angle measure or one diagonal length. After the Bretschneider’s formula, […]

Distance between a line and a point In many cases, we will need to find the shortest distance between a line a point. This distance is on the perpendicular of the line. This means that we […]

Inscribed circles, from the lounge Problem 23: A circle of center has been inscribed in a square ABCD, of side 16 meters. In the following figure, a smaller circle of center and tangent of Circle […]

Trapezoid from the lounge   Problem 24: The isosceles trapezoid, ABCD, shown in the following figure has the parallel sides measuring 8 meters and 18 meters. 1. Find the area of the inscribed circle.

Square from the lounge   Problem 25: Find the value of the blue shaded area in the following design. The area is inside a square with a side of 8 meters. The four holes are […]