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- https://math.libretexts.org/Courses/Chabot_College/Math_in_Society_(Zhang)/02%3A_Geometry/2.01%3A_Basic_Geometric_Concepts_and_FiguresYou use geometric terms in everyday language, often without thinking about it. For example, any time you say “walk along this line” or “watch out, this road quickly angles to the left”, you are using ...You use geometric terms in everyday language, often without thinking about it. For example, any time you say “walk along this line” or “watch out, this road quickly angles to the left”, you are using geometric terms to make sense of the environment around you. In the world of mathematics, each of these geometric terms has a specific definition. It is important to know these definitions—as well as how different figures are constructed—to become familiar with the language of geometry.
- https://math.libretexts.org/Bookshelves/Applied_Mathematics/Math_For_Liberal_Art_Students_2e_(Diaz)/06%3A_Geometry/6.01%3A_Basic_Geometric_Concepts_and_FiguresYou use geometric terms in everyday language, often without thinking about it. For example, any time you say “walk along this line” or “watch out, this road quickly angles to the left”, you are using ...You use geometric terms in everyday language, often without thinking about it. For example, any time you say “walk along this line” or “watch out, this road quickly angles to the left”, you are using geometric terms to make sense of the environment around you. In the world of mathematics, each of these geometric terms has a specific definition. It is important to know these definitions—as well as how different figures are constructed—to become familiar with the language of geometry.
- https://math.libretexts.org/Courses/Las_Positas_College/Math_27%3A_Number_Systems_for_Educators/07%3A_Geometry/7.06%3A_PolygonsThe diameter (a line which passes through the center of the circle) of the semicircle is then also 180∘. Since the measures of angles A1=A2, C1=C2, and \(A_{1}+B+C_{1}=...The diameter (a line which passes through the center of the circle) of the semicircle is then also 180∘. Since the measures of angles A1=A2, C1=C2, and A1+B+C1=180, then by substitution, A2+B+C2=180. Find the sum of the interior angles of a triangle, using the formula. Find the sum of the interior angles of a pentagon, using the formula. Find the sum of the interior angles of a 15-sided polygon, using the formula.
- https://math.libretexts.org/Courses/Las_Positas_College/Math_for_Liberal_Arts/09%3A_Geometry/9.01%3A_Lines_and_AnglesIn this example, you may have noticed that angles ∠HJI, ∠IJF, and ∠HJM are all right angles. (If you were asked to find the measurement of ∠FJM, you would find that angle to be 90º, too.) This is what...In this example, you may have noticed that angles ∠HJI, ∠IJF, and ∠HJM are all right angles. (If you were asked to find the measurement of ∠FJM, you would find that angle to be 90º, too.) This is what happens when two lines are perpendicular—the four angles created by the intersection are all right angles.
- https://math.libretexts.org/Courses/College_of_the_Canyons/Math_130%3A_Math_for_Elementary_School_Teachers_(Lagusker)/06%3A_Geometry/6.02%3A_PolygonsThe diameter (a line which passes through the center of the circle) of the semicircle is then also 180∘. Since the measures of angles A1=A2, C1=C2, and \(A_{1}+B+C_{1}=...The diameter (a line which passes through the center of the circle) of the semicircle is then also 180∘. Since the measures of angles A1=A2, C1=C2, and A1+B+C1=180, then by substitution, A2+B+C2=180. Find the sum of the interior angles of a triangle, using the formula. Find the sum of the interior angles of a pentagon, using the formula. Find the sum of the interior angles of a 15-sided polygon, using the formula.
- https://math.libretexts.org/Courses/Santiago_Canyon_College/HiSet_Mathematica_(Lopez)/12%3A_Geometria/12.01%3A_Conceptos_geometricos_basicos_y_figurasUtilizas términos geométricos en el lenguaje cotidiano, muchas veces sin pensarlo. Por ejemplo, cada vez que dices “caminar por esta línea” o “cuidado, este camino rápidamente se orienta hacia la izqu...Utilizas términos geométricos en el lenguaje cotidiano, muchas veces sin pensarlo. Por ejemplo, cada vez que dices “caminar por esta línea” o “cuidado, este camino rápidamente se orienta hacia la izquierda”, estás usando términos geométricos para darle sentido al entorno que te rodea. En el mundo de las matemáticas, cada uno de estos términos geométricos tiene una definición específica. Es importante conocer estas definiciones —así como cómo se construyen diferentes figuras— para familiarizarse