Tag: triangles

Questions Related to triangles

In the sides $BC,CA,AB$ of a triangle $ABC$, three points $D,E,F$ are taken such that each of $BD,CE,AE$ is equal to one-third of the corresponding side, then
$\triangle DEF=\dfrac {1}{2}\triangle ABC$.

  1. True

  2. False


Correct Option: B

In any triangle, medians meet at a point and divide each other as the ratio of $2:3$

  1. True

  2. False


Correct Option: B

If $AD$ and $PM$ are medians of triangles $ABC$ and $PQR$, respectivetly where $\triangle ABC \sim \triangle PQR$, then  $\dfrac {AB}{PR}=\dfrac {AC}{PM}$.

  1. True

  2. False


Correct Option: B

The area of two similar triangles are $200$ and $128$, then the ratio of their corresponding altitude is __________

  1. $25:16$

  2. $5:4$

  3. $4:5$

  4. $16:25$


Correct Option: B
Explanation:

Since we know that ratio of areas of two similar triangles is equal to the square of the ratio of their altitude
therefore
Ratio of their altitude=$\sqrt {\dfrac{{200}}{{128}}} $
$ = \sqrt {\dfrac{{100}}{{64}}} $
$ = \dfrac{{10}}{8}$
$ = \dfrac{5}{4}$
$ = 5:4$