1. Page 43 Statements Reasons 1. Given 2. Corresponding parts of congruent figures are congruent 3. Reflexive 7. All right angles are congruent 3 1 2 4 5. Angles on a line 4. Squares contain right four right angles 6. Supplements of right angles are right angles 8. A triangle that contains a right angle is a right triangle I I X

2. Lesson 10 – Mid-segment of a Triangle

3. Page 43 Statements Reasons 1. Given 2. Opposite sides of a rectangle are congruent 7. CPCTC 3. A rectangle contains four right angles 4. All right angles are congruent 5. A midpoint divides a segment into two congruent segments 8. An isosceles triangle has two congruent sides I I II III

4. Page 44 Opposite sides of a parallelogram are congruent Substitution postulate Substraction postulate Opposite sides of a parallelogram are congruent P = sum of sides Substitution postulate

5. Page 44 26 Opposite sides of a parallelogram are congruent Diagonals of a parallelogram bisect each other 26 Substitution Postulate Diagonals of a parallelogram bisect each other Substitution Postulate 17 14 P = sum of sides

6. Page 45 is the segment created by joining the midpoints of any two sides of a triangle

7. Page 45 Mid-segment consruction V V

8. Page 46 9 10 18 20 30

9. Page 46

10. Homework – Page 48

11. A midpoint divides a segment into two congruent parts Page 47 I I II G III Vertical angles are congruent

12. Page 47 Corresponding parts of congruent triangles are congruent I Partition postulate Substitution Division postulate