Question

State the postulate that verifies is in plane Q when points A and B are in Q.
Postulate 1: A line contains at least two points.
Postulate 1a: A plane contains at least three points not all on one line.
Postulate 1b: Space contains at least four points not all on one plane.
Postulate 2: Through any two different points, exactly one line exists.
Postulate 3: Through any three points that are not one line, exactly one plane exists.
Postulate 4: If two points lie in a plane, the line containing them lies in that plane.
Postulate 5: If two planes intersect, then their intersection is a line.

Answer 1

We can answer this question well by analyzing each postulate.

Postulate 1a : This one proves that if G and H are different points on plane R then  a third point exists in R not GH.

Postulate 1b : This one specifies the minimum number in a space.

Postulate 1 : This one specifies a line segment with two points say A and B

Postulate 2 : This one states that a line is determined by two points.

Postulate 3 : This one explains that for instance a table with four legs would wobble if one leg is shorter than the other three whereas a table with three legs does not wobble.

Postulate 4 : it verifies that AB is in plane Q when points A and B are in Q.

Postulate 5 : This one is about two planes.

From the information above the correct answer to our question is :

4.