Chapter 10: Geometry — Online MCQ Test
MATHS · Samacheer Kalvi 6th · Tamil Nadu State Board
Practice Chapter 10: Geometry with a free chapter-wise online MCQ test.
This chapter covers: Triangles, Types of triangles, Median, Altitude, Quadrilateral basics.
AI-generated questions from basic to board-exam level, with instant results and explanations.
Chapter 10: Geometry — Important Questions & Answers
A triangle is a polygon with how many sides?
- A. 2 sides
- B. 3 sides
- C. 4 sides
- D. 5 sides
Answer: B. 3 sides
A triangle by definition is a closed polygon with exactly 3 sides and 3 angles.
A triangle by definition is a closed polygon with exactly 3 sides and 3 angles.
A triangle with all three sides equal is called a _____ triangle.
- A. Isosceles
- B. Scalene
- C. Equilateral
- D. Right-angled
Answer: C. Equilateral
An equilateral triangle has all three sides of equal length.
An equilateral triangle has all three sides of equal length.
Which of the following is NOT a type of triangle based on sides?
- A. Equilateral
- B. Isosceles
- C. Scalene
- D. Convex
Answer: D. Convex
Convex is a classification based on angles or shape properties, not based on the sides of a triangle.
Convex is a classification based on angles or shape properties, not based on the sides of a triangle.
Which of the following triangles cannot exist?
- A. A triangle with angles 60°, 60°, 60°
- B. A triangle with angles 45°, 45°, 90°
- C. A triangle with angles 50°, 60°, 70°
- D. A triangle with angles 30°, 50°, 110°
Answer: D. A triangle with angles 30°, 50°, 110°
The sum of angles 30° + 50° + 110° = 190°, which exceeds 180°, so such a triangle cannot exist.
The sum of angles 30° + 50° + 110° = 190°, which exceeds 180°, so such a triangle cannot exist.
In an isosceles triangle ABC with AB = AC, the median from A to BC has a special property. What is it?
- A. It is parallel to BC
- B. It is also the altitude and angle bisector
- C. It divides the triangle into two unequal parts
- D. It is longer than the sides
Answer: B. It is also the altitude and angle bisector
In an isosceles triangle, the median from the apex is also the altitude and angle bisector of that angle.
In an isosceles triangle, the median from the apex is also the altitude and angle bisector of that angle.