Urgently seek the "red hook" answer of senior two mathematics.

Compulsory Two

Third, solid geometry.

3.1.1-1~ 7.bbbdcda8.trapezoid 9.7 prism 10.8 or1.1.

3.1.2-1~ 7. dbaddcdc8.63cm2 9. Party A/cake10.1801. Obviously not.

3. 1.3- 1~7.ABACCDD 8。 Center of gravity 9. Hexagonal platform 10.4 1 1. cone

3.1.4-1~ 7. ccdcbddc8.45 or 135 \ 90 9.5 10.2+ radical number 2.

Exercise class (1)-1~7. ABCBA C 8.480 cm2 9.a，2a 10。 Left 1 1 prone, right left.

3.2. 1 Category I-1~7. DBABADC 8。 AB\AC\A 9。 If a is on the plane α, and A intersects B, then P.

At point α,. 10. ∑∫α∩β= b，a ∈ α ∩β，∴ a ∈ b 1 1.0 \ a 1b。

3.2. 1 Category II-1~7. CDDBDCC 8. 1 or 4 or 69. ( 1) 10.(2) (4) 1 1.BD。

3.2.2 Category I-1~7. DDBDDDD 8。 Intersecting or non-planar 9.6 \ 4 \ 6 10. (1/2) Party A-Party B 1 1.6 cm2.

3.2.2 Category II-1~7. CCCADAD 8。 Intersecting or non-planar 9.30 \ 45 \1/210.9011.4

3.2.3 Category I-1 ~ 7. ddaddadd 8。 Intersecting or parallel 9.a‖α or a∈α 10. ABC，ABD 1 1。 Parallel.

3.2.3 Category II-1~7. DDBDDAD 8。 Parallel 9.20 10. (2 radicals 39)/3 1 1.m/n

3.2.3 Category III-1 ~ 7. DBAAADC 8.90 9。 Vertical10.9011.2 (4).

3.2.3 Category IV-1~7. BCBCCCD 8。 No, it should be the root number of PA 9.8 5 10.6cm 1. Equality.

3.2.3 Category 5-1~7. AACADCC 8。 (root number 2)/4 9. S*cosθ 10。 (root number 3)/2cm2 1 1.45.

3.2.4 Category I-1~7. DABDDDA 8. 1 9。 Intersecting or parallel 10.4 root number 2 1 1.a (root number 3)/3.

3.2.4 Category II-1~7. DDBCBBC 8。 Similar to 9.6,3 or18,910.4: 25 or 4:11.12.

3.2.4 Category III-1~7. DDBCDDA 8。 Root number 29.9010.10511.25 Root number 3m.

3.2.4 Category IV-1~7. BDADAAB 8。 (root number 3)/2 9.2 10. (root number 337)/5 1 1. ( 1) (3).

Exercise class (2)-1 ~ 7. DCDBBDA8。 AC ⊥ BD 9.90 10。 (3) (5) 1 1.45.

3.3.1-1~ 7.bbcadba 8.609.18 root number 7 10.2a root number 311:3.

3.3.2-1~ 7. bcaacbd8.3/29.3 root number 3 cm2 10. (The root number of a cube is 3)/2 cubic units 1 1.

Exercise class (3)-1~7. Bdcdddd 8 ~10+0.14/3 cubic unit.

Fourthly, analytic geometry.

4. 1. 1- 1~7.ABABDAB 8。 (y2-y 1)/(x2-x 1)\ 0 \ 0 9。 -9 10.⑶⑸ 1 1.( 1,-5)

4. 1.2 First class-1 ~ 7. dddbcc8。 | b | 9。 (-2，5) 10.3 x-y+8 = 0 1 1。 -2x-y ^ 4 = 0。

4. 1.2 Category II-1~7. BDDDDAD 8。 -x/3-y+3=0 or 4x-y+16 = 0.9.x+2y+6 = 0.10.41658.

4. 1.2 third class-1~ 7. bbbdaca8.-2/39.m ≠1.10. -4/ 15 1 1.y "