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#### Geometry Book Back Questions

6th Standard

Reg.No. :
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Maths

Time : 00:45:00 Hrs
Total Marks : 30
3 x 1 = 3
1. The given triangle is ___________

(a)

a right angled triangle

(b)

an equilateral triangle

(c)

a scalene triangle

(d)

an obtuse angled triangle

2. The angles of a right angled triangle are

(a)

acute, acute, obtuse

(b)

acute, right, right

(c)

right, obtuse, acute

(d)

acute, acute, right

3. Which of the following can be the sides of an isosceles triangle?

(a)

6cm, 3cm, 3cm

(b)

5cm, 2cm, 2cm

(c)

6cm, 6cm,7cm

(d)

4cm, 4cm, 8cm

4. 2 x 1 = 2
5. Every triangle has at least __________ acute angles.

()

two

6. The sum of three angles of a triangle is ___________.

()

180°

7. 3 x 2 = 6
8. Classify the given triangles based on its sides as scalene, isosceles or equilateral.

9. I am a closed figure with each of my three angles is 60°. Who am I?

10. What are the angles of an isosceles right angled triangle?

11. 3 x 3 = 9
12. Can a triangle be formed with the angles 80°, 30°, 40°?

13. Draw a line segment AB = 7 cm and mark a point P on it. Draw a line perpendicular to the given line segment at P.

14. Draw a line segment LM = 6.5 cm and take a point P not lying on it. Using a set square construct a line perpendicular to LM through P.

15. 2 x 5 = 10
16. Can a triangle be formed with the following angles? If yes, name the type of triangle.
(i) 60°, 60°, 60°
(ii) 90°, 55°, 35°
(iii) 60°, 40°, 42°
(iv) 60°, 90°, 90°
(v) 70°, 60°, 50°
(vi) 100°, 50°, 30°

17. Two angles of the triangles are given. Find the third angle.
(i) 80°, 60°
(ii) 75°, 35°
(iii) 52°, 68°
(iv) 50°, 90°
(v) 120°, 30°
(vi) 55°, 85°