HW 10
Does anyone know how to do #4 or #8?
for # 4, draw in 4 altitudes to the outside lines. Then you get 4 equal pairs of triangles. Play with the congruent sides then.
for # 8, use the areas using sine. So the little triangle and big triangle share this same angle. Then use midpoints and similar tringle ratios to show how the lengths for the little triangle relate to the big triangle.
Any hints for #3 and #5?--Jrhaynie 14:48, 11 November 2009 (UTC)
Jrhaynie, for #5, create lines AD and BC. Then use then theorem 36 should help.-jon
For #3, Create segment CF and then use THM 38 for angle CFA and also FCD and then use THM 3 to relate what you found to angle 1, Hope that helps. -Brian
