Representing Geometric Concepts with Models

What is the first picture shown in the video?

• A painting

• A window

• A blackboard

• A door

Which of the following is an undefined term in geometry?

• Triangle

• Point

• Square

• Circle

How is a point usually represented?

• By a circle

• By a small dot

• By a line

• By a plane

What is a line represented by?

• A circle

• A square

• Two arrowheads facing opposite directions

• A small dot

Which of the following is a special type of line that has two endpoints?

• Ray

• Line segment

• Plane

• Point

What is a plane represented by?

• A flat surface extended without end

• A circle

• A small dot

• A line

What do you call points that lie on the same line?

• Non-collinear points

• Collinear points

• Coplanar points

• Non-coplanar points

Which of the following is an example of a plane in real life?

• The tip of a needle

• A timeline

• The intersecting point of two lines

• A piece of paper

What is the difference between collinear and non-collinear points?

• Collinear points lie on the same line, non-collinear points do not

• Collinear points lie on the same plane, non-collinear points do not

• Collinear points are points, non-collinear points are lines

• Collinear points are lines, non-collinear points are planes

What is the difference between coplanar and non-coplanar points?

• Coplanar points lie on the same plane, non-coplanar points do not

• Coplanar points are lines, non-coplanar points are planes

• Coplanar points lie on the same line, non-coplanar points do not

• Coplanar points are points, non-coplanar points are lines