MERRY CHRISTMAS FOR ALL OF YOU
2018/12/19
PARALLELOGRAMS AND NO PARALELLOGRAMS
PARALLELOGRAMS:
Square:
4 sides equal
4 angles equal
2 diagonals
Rectangle:
4 sides equal 2 by 2
4 angles equal
Rhombus:
4 sides equal
4 angles equal 2 by 2
Rhomboid:
4 sides equal 2 by 2
4 angles equal 2 by 2
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Quadrilaterals: They are polygons with four sides and four vertices
Parallelograms: They are cuadrilaterals with two pairs of parallels oposite equal and two pairs of opposite equal angle. They diagonals bisect each other.
NO PARALLELOGRAMS:
Right trapezium:
1 angle of 90G
2 sides parallels
Isoscels trapezium:
2 sides parallels
2 sides equal
Scalen trapezium:
2 sides parallel
4 sides differents
Trapezoid:
4 sides different
Non parallel lines
2018/12/12
2018/12/04
THE POLIGONS
Star poligon: It's a particular poligon with a star shape, created out of linking together non consecutive vertices of a regular poligon.
Inscribed poligon: They are poligons plece inside circles so all vertices of the poligon are placed on the circle.
Circunscribed: They are poligons sorrounding a circle boing its sides tangents to the circle inside.
Equiangular: all their corners or vertices are equal.
Equilateral: All edges or sides are of the some length
Regular: All their vertices angles and sides are equal.
Irregular: Show different angles and length for their sides.
IMPORTANT DEFINITIONS ABOUT ANGLES AND LINES
Parallels: They are lines wich never intersect them selves so all their points are equidistants.
Perpendicular: They are lines wich meet forming four right angles.
Oblique: They are lines wich are not parallels neither perpendicular
Angle: It's a figure formed by two rays sharing a common endpoint.
TYPES OF ANGLES:
-Complementary angles: They are couples of angles wich sum is 90 grades.
-Suplementary angles: They are couples of angles wich sum is 180 grades.
-Adyacent angles: they are angles that share one side and the vertex.
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