Answer:
(1) The two column proof is presented here as follows;
Statement
Reasons
1. C is the midpoint of
Given
B is the midpoint of
D is the midpoint of
2. AC = CE, AB = BC, CD = DE
Definition of midpoint
3. AB + BC = AC, CD + DE = CE
Segment addition postulate
4. CD + DE = AC
Substitution property of equality
5. AB + BC = CD + DE
Substitution property of equality
6. BC + BC = CD + CD
Substitution property of equality
7. 2·BC = 2·CD
Addition of two identical quantities
8. BC = CD
Division property of equality
9. BC ≅ CD
Definition of Congruence
(2) The two column proof for the triangular geometric figure is presented here as follows;
Statement
Reasons
1. 2·WV = XY; 2·YZ = XW; WV = YZ
Given
2. 2·WV = 2·YZ
Multiplication property
3. XY = XW
Substitution Property
4. XW + WV = XV
Segment Addition Property
XY + YZ = XZ
5. XW + WV = XV
Substitution Property
XW + WV = XZ
6. XV = XZ
Substitution Property
Explanation:
Geologist invented the geologic time scale to keep track of older rocks that have been layered over by newer rocks due to sedimentation that comes from other areas.
Hope this helps
Answer:
The meaning and usefulness of the mole Page 2 2 • One mole of NaCl contains 6.022 x 1023 NaCl formula units. Use the mole quantity to count formulas by weighing them.