Contact us
Choose a category below so we can get back to you as quickly as possible.
①把兩個一樣的梯形拼成一個平行四邊形,平行四邊形的底是梯形上底與下底的和;高等於梯形的高,面積等於梯形的兩倍.根據平行四邊形的面積=底×高,推導出:梯形的面積=(上底下底)×高÷2②把一個梯形割成兩個三角形…
We and our partners use cookies and other technologies to analyze traffic and optimize your experience. View more info and control your cookies settings at any time in our Cookies Policy.