70,000,000+400,000+10,000+8,000+500 +30+9 word is the word form

Two streets intersect at a 30- degree angle. at the intersection, the are four crosswalks formed that are the same length. what type of quadrilateral is formed by the crosswalks?

What is sin 7x/4 ? i need on this urgent trig

Given: m∠ adb = m∠cdb ad ≅ dc prove: m∠ bac = m∠bca lol