Ángulos

Cinco unidades sobre ángulos: cómo medirlos con un transportador, cómo se llaman sus tipos, los pares que suman 90° y 180°, los ocho ángulos que se forman cuando una recta corta a dos paralelas y la suma de los ángulos de triángulos y polígonos. El laboratorio de trigonometría de cada página tiene un transportador, un par de rectas paralelas y un triángulo con vértices que puedes arrastrar.

Progreso

Fuentes de este curso (5)

OpenStax, Contemporary Mathematics : 10.2 Angles (angle = two rays with a common endpoint, the vertex; naming ∠ABC and m∡; protractor use, centre mark on the vertex; acute < 90°, right 90°, obtuse between 90° and 180°, straight 180°; adjacent, supplementary (sum 180°), complementary (sum 90°), vertical angles equal; a transversal of two parallel lines makes eight angles numbered 1 to 8, alternate interior 3 and 6, 4 and 5, alternate exterior 2 and 7, 1 and 8, corresponding 1 and 5, 3 and 7, 2 and 6, 4 and 8: openstax.org/books/contemporary-mathematics/pages/10-2-angles)
10.3 Triangles (interior angles add to 180°; Thales is credited with the equal base angles of an isosceles triangle and with vertical angles being equal: .../pages/10-3-triangles)
10.4 Polygons, Perimeter, and Circumference (interior angle sum S = (n − 2)180°, heptagon 900°: .../pages/10-4-polygons-perimeter-and-circumference)
OpenStax Precalculus 2e 5.1 Angles (one degree is 1/360 of a full rotation; radian: openstax.org/books/precalculus-2e/pages/5-1-angles)
MacTutor History of Mathematics, University of St Andrews, "The trigonometric functions" (Ptolemy divides the circle into 360° showing Babylonian influence; 30′ is half of 1°: mathshistory.st-andrews.ac.uk/HistTopics/Trigonometric_functions/)

Fecha de consulta: 2026-10-17