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Which is true? All equilateral triangles are similar. All rectangles are similar. All parallelograms are similar....

Which is true?

All equilateral triangles are similar.
All rectangles are similar.
All parallelograms are similar.
All isosceles triangles are similar.
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Answer #1

First one is true.... All equilateral triangles are similar...

All equilateral triangles are similar. Since all angles are 60° and all sides are equal....so corresponding ratio of sides are also equal..

True.

In rectangles

False because aratio of length amd breadth in two triangles are not equal.... Not similar

In parallelogram.. ratio of sides are not equal .. so not similar

In issoceles triangle , two sides are equal but ration of two unequal sides are not always same in these triangles...

Not similar...

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