Similar Triangles Question Preview (ID: 50479)


Similar Triangles Are Triangles Having Equal Angles And Proportional Sides. This Game Aims To Review Similar Triangles Course For Grade 9 Students. TEACHERS: click here for quick copy question ID numbers.

If two triangles are similar, then:
a) They must have equal sides
b) Their angles must be proportional
c) Their angles must be equal
d) One of them only could be equilateral and the other is not

KLM and OPQ are similar triangles, such that angle K = 90 and angle L = 60. Which of the following sentences is certainly false?
a) Angle O = 30
b) Angle O = 90
c) Angle O = 70
d) Angle O = 60

KLM and OPQ are similar triangles with angle K = angle O; and angle L = angle P. KL = 5 cm and OP = 15 cm. An expected value of LM and PQ are:
a) LM = 7cm and PQ = 21 cm
b) LM = 4 cm and PQ = 8 cm
c) LM = 3 cm and PQ = 1 cm
d) LM = PQ = 20 cm

EFGH is a square of center O and side = 4 cm and RSTU is a square of center C and side 6 cm. Then
a) The triangles EFG and RST are similar of ratio 2/3
b) The triangles EOF and RST are similar of ratio 2/3
c) The triangles EFG and RCS are similar of ratio 2/3
d) None of the choices

ABC is a right triangle at A and AH is the height relative to BC. We can say that:
a) ABC and ABH are similar
b) ABC and ACH are similar
c) ABH and ACH are similar
d) All choices are valid

Which one of the following statements is false?
a) All equilateral triangles are similar
b) All semi-equilateral triangles are similar
c) All isosceles triangles are similar
d) All right isosceles triangles are similar

ABC and KLM are two similar triangles of ratio of similarity = 5; which of the following statement is false?
a) The ratio of their areas is also 5
b) The ratio of their medians is 5
c) The ratio of their altitudes (heights) is 5
d) The ratio of their angular bisectors is 5

ABC and KLM are similar triangles with AB = 6, AC = 8 and BC = 10. Then:
a) KLM is a right triangle
b) KLM is a right isosceles triangle
c) KL = 12, KM = 16 and LM = 5
d) None of the choices

ABC and KLM are similar triangles with angle A = 70 and angle B = 40. Then:
a) KLM is a right triangle
b) KLM is an isosceles triangle
c) Angle L = 110
d) KLM is a right isosceles triangle

Which statement is false?
a) If two triangles are congruent then they are similar
b) All similar triangles are congruent
c) The triangles of sides (8,8,3) and (12,12,4.5) are similar
d) Not all isosceles triangles are similar

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