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Post your solution with the link to corresponding mathematical problem in the chat on this site and we will tell you if it's correct.
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.
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.
Solve the equation for x. Simplify the solution.
The lengths of the triangle's sides are: 3, 4, 5. Find all the angles.
The lengths of the triangle's sides are: 2, 3, 4. Find all the angles.
The lengths of the triangle's sides are: 1, 2, 3. Find all the angles.