20xx牛津上海版一起六下unit11controllingfireppt课件3内容摘要:
It’s in the corridor. Where is it? It’s inside the room. Look There is … on the ground floor . first are second third Look and write the first floor shoes on the second floor coffee shop on the ground floor There are toys on the third floor. Kitty is telling Peter the location of the firefighting equipment in their school. Listen and help Peter mark them on the floor plan. Listen and draw Listening 216。 216。 Reading Read and tick () Many, many years ago, people used a stick, a large piece of wood and dry leaves to。20xx牛津上海版一起六下unit11controllingfireppt课件3
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例 1 如图,要在 S区建一个贸易市场,使它到铁路和公路距离相等, 离公路与铁路交叉处 500米,这个集贸市场应建在何处(比例尺为 1︰ 20200)。 D C S 解:作夹角的角平分线 OC, 截取 OD= ,D即为所求 . O 典例精析 例 2 已知:如图, △ ABC的角平分线 BM, CN相交于点 P, 求证:点 P到三边 AB, BC, CA的距离相等 . A B C P N M D