Construction of quadrilaterals & ⏲️related problems

https://youtu.be/OenHQbGFsCg 

https://youtu.be/w0_2yK0S3lg

https://youtu.be/vz3SI8X0WrU

https://drive.google.com/file/d/1mWaZpc1sIfFKvOGeq_eQ4QIQbtcjTzc1/view?usp=drivesdk

https://drive.google.com/file/d/1m_Z0lp1H_6Xk7uQPePzxaU1lJ7Db4K-y/view?usp=drivesdk