對(duì)頂角及其性質(zhì).pptx

對(duì)頂角及其性質(zhì).pptx

ID:52703293

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頁(yè)數(shù):19頁(yè)

時(shí)間:2020-02-26

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1、滬科版七年級(jí)(下冊(cè))10.1相交線學(xué)習(xí)目標(biāo):1.通過(guò)兩條相交直線的探究,掌握鄰補(bǔ)角和對(duì)頂角的定義及性質(zhì)。2.經(jīng)歷觀察、測(cè)量、推理、交流等探究過(guò)程,理解對(duì)頂角的性質(zhì)。3.能運(yùn)用對(duì)頂角的性質(zhì)進(jìn)行運(yùn)算并解決一些相關(guān)的實(shí)際問(wèn)題。你能舉出一些生活中有關(guān)相交直線的實(shí)例嗎?議一議生活中的相交線新課導(dǎo)入生活中的相交直線在我們生活的世界中,蘊(yùn)涵著大量的相交線,研究它們對(duì)今后的學(xué)習(xí)、工作和生活都很有用。本節(jié)要研究相交線成的角和它的性質(zhì),并用以解決一些簡(jiǎn)單的實(shí)際問(wèn)題.有一個(gè)公共點(diǎn)的兩條直線形成相交直線.觀察圖10-1剪刀剪開布片過(guò)程中有關(guān)角的位置和大小

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