In Exercises 1-4, use the diagram. 1. Name a pair of parallel lines. 2. Name a pair of perpendicular lines.
3. Is AB BC ? Explain.
4. Is BD 1 CD? Explain.​

Which of the following expressions are equivalent ?

Determine whether the quadrilateral below is a parallelogram. justify/explain your answer (this means back it up! give specific information that supports your decision. writing just "yes" or "no" will result in no credit.)

Many newspapers carry a certain puzzle in which the reader must unscramble letters to form words. how many ways can the letters of emdangl be arranged? identify the correct unscrambling, then determine the probability of getting that result by randomly selecting one arrangement of the given letters.