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4. Triangles
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Q13 of 168 Page 4

If and are two triangles such that , then write Area (): Area ().

Given that ΔABC and ΔDEF are two triangles such that


Here, the corresponding sides are given proportional.


We know that two triangles are similar if their corresponding sides are proportional.


And we know that the ratio of areas of two similar triangles is equal to the square of the ratio of their corresponding sides.



∴ Area (ΔABC): Area (ΔDEF) = 9: 16


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11

If ABC and DEF are similar triangles such that = 57° and = 73°, what is the measure of ?

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If the altitude of two similar triangles are in the ratio 2 : 3, what is the ratio of their areas?

14

If and are similar triangles such that AB = 3 cm, BC = 2 cm CA = 2.5 cm and EF = 4 cm, write the perimeter of.

15

State Pythagoras theorem and its converse.

Questions · 168
4. Triangles
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