How to find if two acute / obtuse triangles are similar

Practice Questions

ISEE Upper Level Mathematics Achievement › How to find if two acute / obtuse triangles are similar

Questions

3

1

$\Delta ABC \sim \Delta DEF$

What is ?

2

$\Delta ABC \sim \Delta DEF$

What is the perimeter of $\Delta DEF$ ?

3

Similar

NOTE: Figures NOT drawn to scale.

Refer to the above two triangles.

$\Delta ABC \sim \Delta DEF ,AB = 25, DE = 20, AC = 20$

What is ?

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