## Sum of Interior Angles of a Triangle

The sum of interior angles of a triangle is always equal to 180°. This is because, if we join the … Read more

## Exterior Angles of a Triangle – Formula and Examples

The exterior angles of a triangle are formed when we extend the sides of the triangle. The sum of exterior … Read more

## Calculating Interior Angles of a Triangle

The interior angles of any triangle have a total sum of 180°. Based on the lengths of their sides, we … Read more

## Interior Angles of a Polygon – Formula and Examples

The sum of interior angles of any polygon can be calculated using a formula. The formula is derived considering that … Read more

## Exterior Angles of a Polygon – Formula and Examples

The exterior angles of polygons are formed when we extend the sides of a polygon. The sum total of these … Read more

## Interior Angles and Sum of a Pentagon with Examples

Pentagons have a sum of interior angles of 540°. Therefore, in the case of regular pentagons, each interior angle measures … Read more

## Intersecting Lines – Properties and Examples

Intersecting lines are formed when two or more lines share one or more points of intersection. For the lines to … Read more

## Parallel Lines – Definition, Angle, Formula, Symbol

Parallel lines are lines that never intersect. These lines are characterized by being equidistant at each corresponding point. We can … Read more

## Perpendicular Lines – Definition, Properties and Examples

Perpendicular lines are two lines that intersect each other at an angle of 90°. We can also say that, if … Read more

## Distance between two points – Formula and examples

The distance between two points can be calculated using the distance formula. In turn, the distance formula is derived using … Read more