LESSON 1 MATH

1. 1. What are the three undefined terms in geometry?

• A) Point, line, and plane

• B) Angle, segment, and ray

• C) Intersection, midpoint, and congruence

• D) Perpendicular, parallel, and transversal

Answer explanation

Explanation: In geometry, point, line, and plane are fundamental concepts that are not defined but serve as building blocks for defining other geometric figures and relationships.

2. Which of the following is NOT a subset of a line?

• A) Line segment

• B) Ray

• C) Endpoint

• D) Collinear points

Answer explanation

Explanation: An endpoint is a specific point that marks the termination of a line segment. It is not a subset of a line but rather a point on the line.

3. What is a line segment?

• A) A line that extends infinitely in both directions.

• B) A portion of a line with two endpoints.

• C) A straight path that extends infinitely in one direction.

• D) A part of a line that includes all points between two given points.

Answer explanation

Explanation: A line segment is a part of a line with two distinct endpoints.

4. Which of the following best defines a ray?

• A) A straight path that extends infinitely in one direction.

• B) A portion of a line with two endpoints.

• C) A part of a line that includes all points between two given points.

• D) A portion of a line that extends infinitely in one direction and has one endpoint.

Answer explanation

Explanation: A ray is a part of a line that starts at one endpoint and extends infinitely in one direction.

5. Points that lie on the same line are called:

• A) Coplanar points

• B) Concurrent points

• C) Collinear points

• D) Contrapuntal points

Answer explanation

Explanation: Collinear points are points that lie on the same straight line.

6. Which statement best describes coplanar points?

• A) Points that lie on the same line.

• B) Points that lie in the same plane.

• C) Points that form a right angle.

• D) Points that intersect at a single point.

Answer explanation

Explanation: Coplanar points are points that lie on the same flat 

7. A line contains how many points?

• A) One

• B) Two

• C) Infinitely many

• D) None of the above

Answer explanation

Explanation: A line extends infinitely and contains infinitely many points.

8. A point determines how many lines?

• A) None

• B) One

• C) Two

• D) Infinitely many

Answer explanation

Explanation: A single point can determine an infinite number of lines passing through it.

9. Which of the following is true about parallel lines?

• A) They intersect at right angles.

• B) They are coplanar lines that do not intersect.

• C) They form congruent angles.

• D) They always lie in the same plane.

Answer explanation

Explanation: Parallel lines are coplanar lines that never intersect.

10. What is the intersection of two lines called?

• A) Endpoint

• B) Vertex

• C) Right angle

• D) Point

Answer explanation

  Explanation: The intersection of two lines occurs at a single point where they meet.