Question

1. the sum of exterior angles of any polygon is: *

a. 180°
b. 360°
c. 540°
d. 720°

1. a line that touches a circle at exactly one point is called: *

a. secant
b. tangent
c. chord
d. diameter

Explanation:

• For question 5, it is a well - known geometric fact that the sum of exterior angles of any polygon is always 360°.
• For question 6, by the definition in geometry, a line that touches a circle at exactly one point is called a tangent.

Answer:

1. B. 360°
2. B. Tangent