fase = faces
congrunt = congruent
tringal = triangles
I strongly recommend that you use a spell checker! Especially if you try to spell the answer which is a tetrahedron.
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A paralleogram having 4 congruent sides means it would be a rhombus or a square if it had right angles.
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It is (the number of sectors which are numbered 2) divided by 6
It is 1 - (1/2)10 = 0.9990, approx.
A.A 10° angle is congruent to a 10° angle.B.Congruent angles always add up to 90°.C.A congruent angle is always 90°.