21. Problem 6: A rhombus of DIAGONALS 40 mm c’ c’1 and 70 mm long respectively has one end of it’s longer diagonal in HP while that d’ b’1 b’ diagonal is 350 inclined to HP. If the top- d’1 b’d’ c’ a’ 450 view of the same diagonal makes 400 X a’ a’1 Y inclination with VP, draw it’s projections. 30 d1 d d1 a0 1 a c a c1Read problem and answer following questions b1 c11. Surface inclined to which plane? ------- HP b 1 b12. Assumption for initial POSITION? ------ // to HP3. So which view will show True shape? --- TV The difference in these two problems is in STEP 3 only. In problem no.6 inclination of Tv of that diagonal is4. Which diagonal horizontal? ---------- Longer given,It could be drawn directly as shown in 3rd step. Hence begin with TV,draw rhombus below While in no.7 angle of diagonal itself I.e. it’s TL, is X-Y line, taking longer diagonal // to X-Y given. Hence here angle of TL is taken,locus of c1 Is drawn and then LTV I.e. A1 c1 is marked and final TV was completed.Study illustration carefully. Problem 7: A rhombus of diagonals 40 mm and 70 mm long respectively having c’ c’1 one end of it’s longer diagonal in HP while d’ b’1 that diagonal is 350 inclined to HP and b’ d’1 makes 400 inclination with VP. Draw it’s b’d’ X a’ c’ a’ 450 a’1 Y projections. a1 30 0 d d1 d1 Note the difference in a c a c1 TL construction of 3rd step b1 c 2 b 1 b1 c1 in both SOLUTIONS.

22. c’ c’1 d’ b’1 Problem 8: A circle of 50 mm diameter is a’ b’ d’ c’ b’ resting on Hp on end A of it’s diameter AC a’ 300 a’1 d’1 Y X which is 300 inclined to Hp while it’s Tv d1 450 a d d is 450 inclined to Vp.Draw it’s projections. 1 1 a ca c1 1 b cRead problem and answer following questions 1 11. Surface inclined to which plane? ------- HP b b12. Assumption for initial position? ------ // to HP3. So which view will show True shape? --- TV The difference in these two problems is in step 3 only.4. Which diameter horizontal? ---------- AC In problem no.8 inclination of Tv of that AC is Hence begin with TV,draw rhombus below given,It could be drawn directly as shown in 3rd step. X-Y line, taking longer diagonal // to X-Y While in no.9 angle of AC itself i.e. it’s TL, is given. Hence here angle of TL is taken,locus of c1 Is drawn and then LTV I.e. a1 c1 is marked and Problem 9: A circle of 50 mm diameter is final TV was completed.Study illustration carefully. resting on Hp on end A of it’s diameter AC which is 300 inclined to Hp while it makes c’ c’1 ’ b’1 450 inclined to Vp. Draw it’s projections. a’ b’ d’ c’ b ’d a’ a’1 d’1 d d1 d a 300 1 1 Note the difference in TL a ca c1 construction of 3rd step 1 c b in both solutions. 1 1 b b1