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Category: Geometry

Question-60588

Question Number 60588 by behi83417@gmail.com last updated on 22/May/19 Commented by behi83417@gmail.com last updated on 22/May/19 $${AD}\:\&{CE}\:{are}\:{angular}\:{bisector}\:{of} \\ $$$$\measuredangle{A}\:\&\measuredangle{C}. \\ $$$${DG}\bot{AB},{EF}\bot{BC},{BH}\bot{DE},{DE}=\frac{\mathrm{1}}{\mathrm{2}}{AC}. \\ $$$$\Rightarrow\frac{{BH}}{{DG}+{EF}}=? \\ $$…

Question-126080

Question Number 126080 by ajfour last updated on 17/Dec/20 Commented by ajfour last updated on 18/Dec/20 $${Cylinder}\:{and}\:{sphere}\:{have}\:{the} \\ $$$${same}\:{radius}.\:{An}\:{equilateral} \\ $$$${triangular}\:{plate}\:{rests}\:{on}\:{sphere} \\ $$$${with}\:{two}\:{vertices}\:{against}\:{curved} \\ $$$${surface}\:{of}\:{cylinder}\:{and}\:{top}\:{vertex}…

Question-60527

Question Number 60527 by ajfour last updated on 21/May/19 Commented by ajfour last updated on 21/May/19 $$\mathrm{Find}\:\mathrm{maximum}\:\mathrm{area}\:\mathrm{of}\:\mathrm{quadrilateral} \\ $$$$\mathrm{OAPB}.\:\mathrm{The}\:\mathrm{ellipse}\:\mathrm{equation}\:\mathrm{is}\:\mathrm{the} \\ $$$$\mathrm{usual}\:\mathrm{one}. \\ $$ Answered by…

on-any-trapezoid-ABCD-points-E-and-F-are-located-on-CD-so-that-AD-is-parallel-to-BE-and-AF-is-parallel-to-BC-Point-H-is-the-intersection-of-AF-and-BE-point-G-is-the-intersection-of-AC-and-BE-If-

Question Number 126052 by fajri last updated on 16/Dec/20 $$ \\ $$$$\mathrm{on}\:\mathrm{any}\:\mathrm{trapezoid}\:\mathrm{ABCD}\:\mathrm{points}\:\mathrm{E}\:\mathrm{and}\: \\ $$$$\mathrm{F}\:\mathrm{are}\:\mathrm{located}\:\mathrm{on}\:\mathrm{CD}\:\mathrm{so}\:\mathrm{that}\:\mathrm{AD}\:\mathrm{is} \\ $$$$\mathrm{paral}{l}\mathrm{el}\:\mathrm{to}\:\mathrm{BE}\:\mathrm{and}\:\mathrm{AF}\:\mathrm{is}\:\mathrm{parallel}\:\mathrm{to}\: \\ $$$$\mathrm{BC}.\mathrm{Point}\:\mathrm{H}\:\mathrm{is}\:\mathrm{the}\:\mathrm{intersection}\:\mathrm{of}\:\mathrm{AF}\: \\ $$$$\mathrm{an}{d}\:\mathrm{BE}\:\mathrm{point}\:\mathrm{G}\:\mathrm{is}\:\mathrm{the}\:\mathrm{intersection}\:\mathrm{of}\: \\ $$$$\mathrm{AC}\:\mathrm{and}\:\mathrm{BE}.\:\mathrm{If}\:\mathrm{the}\:\mathrm{length}\:\mathrm{of}\:\mathrm{AB}\:\mathrm{is}\:\mathrm{4}\:\mathrm{cm} \\ $$$${an}\mathrm{d}\:\mathrm{the}\:\mathrm{length}\:\mathrm{of}\:\mathrm{CD}\:\mathrm{is}\:\mathrm{10}\:\mathrm{cm}\:\mathrm{what}\:\mathrm{is} \\…

if-in-triangle-ABC-AD-is-a-bisector-of-angle-A-then-BD-DC-AB-AC-investigate-is-the-statement-true-ore-false-

Question Number 126049 by fajri last updated on 16/Dec/20 $$ \\ $$$$\mathrm{if}\:\mathrm{in}\:\mathrm{triangle}\:\mathrm{AB}{C},\:\mathrm{AD}\:\mathrm{is}\:\mathrm{a}\:\mathrm{bisector}\:\mathrm{of} \\ $$$$\mathrm{an}{g}\mathrm{le}\:\mathrm{A}\:\mathrm{then}\:\mathrm{BD}\::\:\mathrm{DC}\:=\:\:\:\mathrm{AB}\::\:\mathrm{AC}\: \\ $$$$\mathrm{investigate},\:\mathrm{is}\:\mathrm{the}\:\mathrm{statement}\:\mathrm{true}\:\mathrm{ore} \\ $$$$\mathrm{fals}{e}? \\ $$ Terms of Service Privacy Policy…

Question-191455

Question Number 191455 by Mingma last updated on 24/Apr/23 Answered by a.lgnaoui last updated on 25/Apr/23 $$\:\bigtriangleup\mathrm{ANB}\:\:\:\mathrm{BM}\bot\mathrm{AN}\:\:\mathrm{et}\:\measuredangle\mathrm{MBA}=\measuredangle\mathrm{MBN} \\ $$$$\:\Rightarrow\mathrm{AB}=\mathrm{BN}=\frac{\boldsymbol{\mathrm{x}}}{\mathrm{cos}\:\boldsymbol{\theta}}\:\:\:\:\:\:\:\:\left(\mathrm{1}\right) \\ $$$$\:\bigtriangleup\mathrm{PNC}\:\:\:\:\:\:\mathrm{PC}=\mathrm{3cm} \\ $$$$\:\mathrm{BM}\mid\mid\:\mathrm{NP}\:\:\Rightarrow\:\measuredangle\:\mathrm{PNC}=\measuredangle\mathrm{MBN}=\theta=\measuredangle\mathrm{PCN} \\ $$$$\:\Rightarrow\mathrm{NP}=\mathrm{PC}=\mathrm{3}…