Polygons

A regular polygon has all equal sides with the same measurement. 

A regular polygon has congruent angles and sides, an irregular polygon has different angles and sides. 




 










   









If you want to find the measurement of each angle, then you can use the formula (n-2)180 and divide the result by the number of sides. 







 










A square is a rectangle with four equal sides.

AB=BC=CE=EA

The sum of the interior angles of a square is 360 degrees.

Every corner  90 degrees (right) angle. 























































When two parallel lines are crossed by another line
(called the transversal).
You need to remember which angles are equal to each other.










Let's Practice

Let's Practice

Let's Practice

 Parallel Lines

Triangles 



A triangle is a closed figure with 3 sides.
The sum of the interior angles of any triangle is 180 degrees.









There are three different types of triangles depending on the sides and angles.
Let's see the different types of triangles and their properties:









Types of Triangles 

Right Triangles 

Circles

Polygons 



Any triangle with a 90°-degree angle is a right triangle.
The measurement of the sides of a right triangle can be calculated with the following formula:








where C is the hypotenuse, A and B are the legs of the triangle

Let's see the different types of triangles and their properties:









RIGHT ISOSCELES

45:45:90



The right triangle 45-45-90 follows the ratio 

X:X:X√2
Let's do an example: 




















Quadrilaterals

The Square

The Rectangle