Chapter Exam

Chapter-6 Practical Geometry — Online MCQ Test

Q: Which instrument is mainly used to draw arcs and circles in practical geometry?

Answer: A. Compass — A compass is used to draw arcs and circles with a fixed radius. It is a basic tool in geometric constructions.

Q: Which of the following is NOT commonly used in basic geometric constructions in Class 8?

Answer: D. Calculator — Ruler, compass, and pencil are used for constructions. A calculator is not used for drawing geometric figures.

Q: A student is constructing the perpendicular bisector of AB. After drawing equal arcs from A and B, what should be done next?

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.

MATHS · Samacheer Kalvi 8th · Tamil Nadu State Board

Practice Chapter-6 Practical Geometry with a free chapter-wise online MCQ test for Tamil Nadu State Board Samacheer Kalvi 8th MATHS. 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.

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Chapter-6 Practical Geometry — Important Questions & Answers (FAQ)

Frequently asked questions from Tamil Nadu State Board Samacheer Kalvi 8th MATHS — Chapter-6 Practical Geometry, with answers and explanations. These are sample questions; the exam has its own separate question set.

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.

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.

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.

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.

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.

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