Chapter-6 Practical Geometry — Online MCQ Test
MATHS · Samacheer Kalvi 8th · Tamil Nadu State Board
Practice Chapter-6 Practical Geometry with a free chapter-wise online MCQ test.
This chapter covers: constructions compass ruler Explains geometric constructions using compass and ruler.
AI-generated questions from basic to board-exam level, with instant results and explanations.
Chapter-6 Practical Geometry — Important Questions & Answers
Which instrument is mainly used to draw arcs and circles in practical geometry?
- A. Compass
- B. Protractor
- C. Divider
- D. Set square
Answer: A. Compass
A compass is used to draw arcs and circles with a fixed radius. It is a basic tool in geometric constructions.
A compass is used to draw arcs and circles with a fixed radius. It is a basic tool in geometric constructions.
Which of the following is NOT commonly used in basic geometric constructions in Class 8?
- A. Ruler
- B. Compass
- C. Pencil
- D. Calculator
Answer: D. Calculator
Ruler, compass, and pencil are used for constructions. A calculator is not used for drawing geometric figures.
Ruler, compass, and pencil are used for constructions. A calculator is not used for drawing geometric figures.
Which construction is possible using only compass and ruler?
- A. Drawing a perfect freehand circle
- B. Constructing the perpendicular bisector of a line segment
- C. Measuring an angle directly in degrees
- D. Calculating the area of a triangle
Answer: B. Constructing the perpendicular bisector of a line segment
The perpendicular bisector of a line segment can be constructed using only a compass and ruler. The other tasks need different methods or calculations.
The perpendicular bisector of a line segment can be constructed using only a compass and ruler. The other tasks need different methods or calculations.
A student is constructing the perpendicular bisector of AB. After drawing equal arcs from A and B, what should be done next?
- A. Join the two arc intersection points
- B. Measure the line segment AB again
- C. Draw a circle around AB
- D. Erase the endpoints A and B
Answer: A. Join the two arc intersection points
The intersection points of the arcs are joined to form the perpendicular bisector. This line passes through the midpoint at right angles.
The intersection points of the arcs are joined to form the perpendicular bisector. This line passes through the midpoint at right angles.
A line segment AB is 8 cm long. Using compass and ruler, a student constructs its perpendicular bisector. Which statement is correct?
- A. The bisector may not pass through the midpoint
- B. The bisector divides AB into two 4 cm parts and is perpendicular to AB
- C. The bisector divides AB into three equal parts
- D. The bisector is always parallel to AB
Answer: B. The bisector divides AB into two 4 cm parts and is perpendicular to AB
A perpendicular bisector always passes through the midpoint and makes a right angle with the segment. So an 8 cm segment is divided into two 4 cm parts.
A perpendicular bisector always passes through the midpoint and makes a right angle with the segment. So an 8 cm segment is divided into two 4 cm parts.