Help A pyramid with vertex V has a square base PQRS of side 8.5cm. Its slant face slopes at an angle of 60 degrees to the base.
calculate, correct to three significant figures
a)the height of pyramid
b)the length of a slant edge
c)the area of the net of the pyramid

Given: lines a and b are parallel and line c is a transversal. prove: 2 is supplementary to 8 what is the missing reason in the proof? statement reason 1. a || b, is a transv 1. given 2. ∠6 ≅ ∠2 2. ? 3. m∠6 = m∠2 3. def. of congruent 4. ∠6 is supp. to ∠8 4. def. of linear pair 5. ∠2 is supp. to ∠8 5. congruent supplements theorem corresponding angles theorem alternate interior angles theorem vertical angles theorem alternate exterior angles theorem