Puas yog txhua tus polygon zoo sib xws?
Puas yog txhua tus polygon zoo sib xws?

Video: Puas yog txhua tus polygon zoo sib xws?

Video: Puas yog txhua tus polygon zoo sib xws?
Video: xum yog tus maiv siab dawb/ Maiv thoj/ nkauj taw. tshiab 2023 2024, Kaum ib hlis
Anonim

Rau ob qho tib si polygons nrog tib tus naj npawb ntawm sab: Lawv ib txwm zoo sib xws . Vim lawv muaj ob sab tag nrho tib qhov ntev lawv yuav tsum nyob rau tib lub proportions, thiab lawv cov ces kaum sab hauv yeej ib txwm zoo ib yam, thiab yog li ntawd ib txwm zoo sib xws.

Kuj paub yog, cov polygons zoo sib xws?

Cov peev txheej. zoo sib xws polygons Ob polygons nrog tib lub cev, tab sis tsis yog tib qhov loj. Cov ces kaum sib thooj ntawm zoo sib xws polygons yog congruent (raws li qhov qub) thiab cov sab sib txuas yog proportional (hauv tib qhov piv). CongruentCongruent cov duab zoo ib yam ntawm qhov loj, zoo thiab ntsuas.

Kuj Paub, nws txhais li cas rau 2 polygons zoo sib xws? Polygons . Ib ob polygons zoo ib yam yog lawv cov ces kaum sib thooj yog congruent thiab kev ntsuas ntawm lawv cov sib raug zoo sab yog proportional: Nyob rau hauv daim duab saum toj no tus piv los yog qhov ntsuas qhov ntsuas ntawm lub quadrilateral mus rau sab laug piv rau lub quadrilateral rau sab xis yog ½.

Yog li ntawd, tag nrho cov polygons zoo sib xws?

Kev sib haum xeeb cov duab muaj tib qhov loj me, tib lub kaum sab xis, tib sab thiab tib cov duab. Lawv yog IDENTICAL! Kev sib haum xeeb cov duab yeej ib txwm zoo sib xws , mas zoo sib xws cov duab feem ntau tsis yog kev sib haum xeeb - Ib qho loj dua thiab ib qho me dua. Hauv kev sib haum xeeb cov duab, qhov sib piv ntawm qhov sib thooj yog 1: 1.

Puas yog daim duab peb sab yog ib qho polygon tsis tu ncua?

A tsis tu ncua polygon yog a polygon qhov twg tag nrho cov sab thiab cov ces kaum yog tib yam. Ib qho kev sib npaug daim duab peb sab yog a tsis tu ncua polygon . Nws muaj tag nrho cov tib sab thiab tib lub kaum sab xis. Ib isosceles daim duab peb sab muaj ob sab sib npaug thiab ob qhov sib npaug.

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