## All the Cross-Sections of a Cone

Cone cross-sections are obtained when we cut a cone with a plane. We can obtain different cross-sections depending on the … Read more

## All the Cross-Sections of a Cube

The cross-sections of a cube are two-dimensional figures obtained by the intersection of a plane with a cube. Depending on … Read more

## All the Cross-Sections of a Cylinder

Cylinder cross-sections are obtained when we cut a cylinder with a plane. Depending on the orientation of the plane, a … Read more

## Converse of the Pythagorean Theorem – Formulas and Examples

The Pythagorean theorem is the most used in trigonometry and allows us to calculate the length of one of the … Read more

## Vertical Angles Theorem with Examples

Vertical angles are formed at the intersection of two lines. The vertical angles theorem tells us that the vertical angles … Read more

## Height of a Scalene Triangle – Formulas and Examples

The height of a triangle is the perpendicular distance from the base to the opposite vertex. We can calculate the … Read more

## Inscribed Angle Theorem – Cases and Proofs

The inscribed angle theorem indicates that when we have a central angle and an inscribed angle that intersect in the … Read more

## Inscribed Angle Theorem – Formulas and Examples

The inscribed angle theorem is one of the most important theorems in geometry. This theorem tells us that when we … Read more

## Adjacent Angles – Definition, Properties and Examples

Adjacent angles are angles that have a common vertex and a common side but do not overlap. Recall that a … Read more

## Examples and Problems with Thales’ Theorem

Thales’ theorem tells us that a triangle inscribed in a circle, where the hypotenuse corresponds to the diameter of the … Read more