Triangles Test ...

Which postulate can be used to prove the triangles are similar?

If in two triangles, corresponding angles are equal, then their corresponding sides are in the same ratio and hence the two triangles are similar.

In $$\displaystyle \Delta ABC\sim \Delta DEF$$ and their areas are $$\displaystyle { 36cm }^{ 2 }$$ and $$\displaystyle { 64cm }^{ 2 }$$ respectively.If side AB=3 cm. Find DE.

Which of the following postulate can be used to prove $$\Delta {PQR}$$ and $$\Delta {ABC}$$ are similar?

Basic proportionality theorem  is also known as

If one shape becomes another using a resize, then the shapes are __________. 

The areas of two similar triangles are $$121 cm^2$$ and $$81 cm^2$$ respectively. Find the ratio of their corresponding heights.

Which of the following can be used to prove $$\Delta {ABC}$$ and $$\Delta {DEF}$$ are similar?

If the pictured triangles are similar, what reason can be given?

In the given figure, find the value of x, if AB||CD.