19. which point in the figure shown is the vertex of an angle?a. b b. d c. c d. a

Luckily this is a question that can be answered without the figure, seeing as there isn't one posted..

The vertext of an angle is always the point that the lines connect to. It is the common point of two line segments. For example, look here:

the correct answer is semicircle

step-by-step explanation:

the answer is semicircle because the shorter arc joining two points on the circumference of a circle is known as the minor arc, the larger arc is called the major arc, and a semicircle is a half circle, formed by cutting a whole circle along a diameter line.

hope i .

your answer would be 10x - 1