Teorema de PitĂĄgoras
Altura de un triĂĄngulo
= Pythagorean Theorem: The sum of the squares of the lengths of the legs of a right triangle is equal to the square of the length of the hypotenuse. = height or altitude of a triangle: An altitude of a triangle is a straight line through a vertex and perpendicular to (i.e. forming a right angle with) the opposite side. The three altitudes intersect in a single point, called the orthocenter of the triangle.
Mediatriz
= perpendicular bisector: A line which cuts another line into two equal parts at 90°. The three perpendicular bisectors meet in a single point, the circumcenter.
Bisectriz
= angle bisector: The bisector of an angle is the line that divides the angle into two equal parts. The intersection of the angle bisectors is the incenter.
Mediana
= median: A median of a triangle is a straight line through a vertex and the midpoint of the opposite side. The intersection of the medians is the centroid.
Circumference: A line which forms a closed loop. Every point on the line is a fixed (exact distance) from a central point. Radius (radii pl.): A straight line from the centre to a point on the circumference. Diameter: A straight line going from a point on the circumference through the centre to the opposite point on the circumference. A diameter is twice the length of a radius. Chord: A straight line going from a point on the circumference to another and which does not pass through the centre. Arc: A portion of the circumference. Circular sector: The area enclosed by two radii of a circle, and the enclosed arc. Circular segment: The region between a chord of a circle and its associated arc. Page 8