imagine a diamond. this object has four congruent sides.
parallelogram with congruent sides indicated
explore|平行四边形 与 一次函数的火花
20201019163851.png
parallelogram a quadrilateral with two opposite and equal sids
Tips:Do Not Provide
Personal Loans: Go Easy On Your Finances
Finance, Finance, Finance, Foreign Exchange, Stocks, Currency Circle, Venture Capital, Bitcoin, ICO...