a. 4 2. What does this symbol" + represent"? a. segment b. point c. plane 3. At least how many points do you need to form a line? b. 3 4. Which of the following represent a point? a. Edge of a ruler b. Tip of a pen c. Paper 5. Which of the following symbols represents a line segment? a. - b. Identifianti c. 2 C.