Page 4 - Activity

Question 5.
Are a square and a rhombus of side 3 cm similar ?
Answer:
No

Question 6.
Is a rhombus of side 3 cm congruent to another rhombus of side 4 cm ?
Answer:
No

Question 7.
Is the ratio of the areas of two similar triangles equal to the square of the ratio of their
corresponding medians ?
Answer:
Yes

Multiple Choice Questions

Question 1.
ABC and BDE are two equilateral triangles, such that D is the mid-point of BC. The ratio
of the areas of ΔABC and ΔBDE is
(a) 2:1
(b) 1:2
(c) 4:1
(d) 1:4

Question 2.
Sides of two similar triangles are in the ratio 4 : 9. Areas of these triangles are in the
ratio
(a) 2:3
(b) 4:9
(c) 81:16
(d) 16:81

Question 3.
If in two similar triangles PQR and LMN, if QR =15 cm and MN = 10 cm, then the ratio
of the areas of triangles is
(a) 3:2
(b) 9:4
(c) 5:4
(d) 7:4

Question 4.
Two isosceles triangles have equal vertical angles and their areas are in the ratio 16 :