Isosceles triangle

Calculate the size of the interior angles and the length of the base of the isosceles triangle if the arm's length is 17 cm and the height of the base is 12 cm.

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Calculation of an isosceles triangle.
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You need to know the following knowledge to solve this word math problem:

planimetry

Pythagorean theorem
right triangle
triangle

goniometry and trigonometry

sine
cosine

Units of physical quantities

angle

Grade of the word problem

practice for 14 year olds
high school

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