# help me pls geometry

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Which tirangles must be similar
1. Two right triangles with a congruent acute angle
2. Two obtuse angles
3 Two isosceles triangles with congruent bases
4. Two scalene triangles with a congruent angle

• help me pls geometry -

#1. If the acute angle is equal, then all the angles are equal.

• help me pls geometry -

After drawing four squares, Chen completed this chart showing the length of the sides of each square and the area of each square. According to Chenâ€™s chart, if A is the area and s is the length of a side, what can you conclude is the formula for the area of a square?

Side Length Area
1 1
2 4
3 9
4 16

• help me pls geometry -

A=s^2

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