Writing the first Harry Potter book took a long time, but Rowling faced many challenges after it was written. It took over
a year to get the book published. The book's popularity resulted
in fame for Rowling. There were also critics of the book who
found the subject matter to be dark and frightening. Rowling
had to learn to adjust to being a public figure.
V
Which key idea is missing from the summary?

What is the missing statement in step 3 of the proof? given: z1 is complementary to 22. 22 is complementary to 23. prove: m_1 = m23 m21 = m2 m2 1 + m22 = 90° m22 = m23 m22 + m23 = 180° 2 statements 21 is comp. to 22 2. 22 is comp. to 23 3. ? 4. mz1 - 90°-m22 m22+m23 = 90° 6. m23 = 90°-m22 7 m21 - m23 reasons 1. given 2. given 3. def of comp. zs 4. subtr equality prop. 5. def. of comp. 25 6 subtr. equality prop 17. trans. prop. vo