A reference angle is the acute angle formed by the terminal side of an angle and the positive or negative x-axis. True or False?

Figure abcd is a parallelogram. if point c lies on the line x = 2, what is the y-value of point c

Does the problem involve permutations or? combinations? do not solve. the matching section of an exam has 4 questions and 7 possible answers. in how many different ways can a student answer the 4 ? questions, if none of the answer choices can be? repeated?

Joanie wrote a letter that was 1 1/4 pages long. katie wrote a letter that was 3/4 page shorter then joagies letter. how long was katies letter