<p>在四边形<img src="https://file.gaojiufeng.cn/learnAppQuestion/0b/05/0b05d10af4b543dccd741357669d7259.jpg" style="width: 100%;height: auto;">中：<img src="https://file.gaojiufeng.cn/learnAppQuestion/0f/a4/0fa4bb79d5b8f1edb47d72c648eea4e5.jpg" style="width: 100%;height: auto;">且<img src="https://file.gaojiufeng.cn/learnAppQuestion/45/fd/45fd53ce9c6bd0954a751546b211a270.jpg" style="width: 100%;height: auto;">则四边形一定是（）.</p>