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AD is the height of the triangular pyramid ABCD that has BC = 1, CD = 2, ∠BCD = 120° and dihedral ∠BC = 45°. Find the volume of the pyramid.

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The bisector of a triangle divides its side into segments of length 28 and 12, and the difference of the other two sides is 18. Find the perimeter of the triangle.

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Solve the equation for x. Simplify the solution.

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The lengths of the triangle's sides are: 3, 4, 5. Find all the angles.

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The lengths of the triangle's sides are: 2, 3, 4. Find all the angles.

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The lengths of the triangle's sides are: 1, 2, 3. Find all the angles.

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