1. In the figure, LM ।। CB and LN ।। CD, then which of the following is true?

2. In a triangle, if PM is perpendicular from vertex P to side QR, then PM² = ?

3. All circles are:

4. In triangle PQR, if PE/EQ = PF/FR = 1.3, then EF ।। QR?

5. Which of the following triangles is a right-angled triangle?

6. Nazima is fishing. Rod is 1.8 m high, horizontal distance to fly is 2.4 m. Find length of string.

7. In triangle ABC and triangle AMP, right angled at B and M respectively, which triangle is similar to ΔABC?

8. Two polygons of the same number of sides are similar if:

9. In the figure, DE ।। AC and DF ।। AE, then EF ।। ?

10. If a line is drawn through the mid-point of a side of triangle ∥ to another side, it:

11. All squares are:

12. If diagonals of a parallelogram intersect at O, then sum of square of diagonals equals sum of squares of:

13. All __________ triangles are similar.

14. If sides of two similar triangles are in ratio 4:9, then ratio of their areas is:

15. In equilateral triangle of side 2a, each altitude is:

16. In an isosceles triangle ABC with AC = BC and AB² = 2AC², then triangle is:

17. In two equilateral triangles where one side is half the other, what is the area ratio?

18. In triangle ABC, right-angled at B, with AB = √108, AC = 12, BC = 6. Then ∠B is:

19. In trapezium ABCD, AB ∥ DC and diagonals intersect at O. Then ΔAOB ∼ ?

20. In a triangle, if DE ।। BC and AD = 1.5 cm, DB = 3 cm, AE = 2 cm, then EC = ?