Nsogbu triangle ziri ezi (MIYA's 2nd problem)
S.Miyazaki (July 31, 2018)
Nke a bụ usoro dị elu nke "Langley's problem *" na geometry elementrị.
Akara triangle nke ekewara n'ime triangles atọ n'ime ya bu nke angles a, b, c, d, e na f, dika egosiri na onu ogugu. Na triangle ahụ kewara n'ime atọ triangles n'ime nke mere na n'akụkụ ọ bụla a mụrụ site n'ọnụ na diagonal nwere ọnụọgụ ọnụọgụ na ogo, a na-akpọ ebe a "triangle na akụkụ ọnụ".
Gwa na e nwere naanị "triangle ziri ezi na ọnụọgụ abụọ (∠A = 90º)", ma nye ụkpụrụ nke akụkụ ọnụ a, b, c, d, e na f nke triangle ziri ezi n'ime.
N'ebe a, anyị na-ewepu ikpe pụrụ iche nke triangles dị ka e = f = 45º (ya bụ, e + f = 90 Celsius: n'akụkụ aka nri), n'ihi ihe ngwọta na-enweghị isi. Ọzọkwa, anyị anaghị amata ọdịiche dị n'agbata triangle na atụmke onyinyo ya nke oyiyi / ọdịdị ntụgharị ihu ya.
(* Lee Web Wikipedia "Langley's Adventitious Angles")
