# Key to Geometry, Book 8: Triangles, Parallel Lines, Similar Polygons

## by Newton Hawley Author

(From Amazon): Key to Geometry offers a non-intimidating way to prepare students for formal geometry as they do step-by-step constructions. Using only a pencil, compass, and straightedge, students begin by drawing lines, bisecting angles, and reproducing segments. Later they do sophisticated constructions involving over a dozen steps and are prompted to form their own generalizations. When they finish, students have been introduced to 134 geometric terms and are ready to tackle formal proofs. Book 8 covers Triangles, Parallel Lines, Similar Polygons.Format: PaperbackPublisher: Key Curriculum Press

### Additional Details

- Resource Type
- Book
- ISBN
- 091368478-3
- Print Status
- In Print
- lessons
- 23
- Pages
- 138
- Suggested Grades
- 9th - 10th
- Publisher
- Key Curriculum Press
- Copyright
- 1972

### lessons

- 1 perpendicular bisector of a segment- review
- 2 perpendicular bisectors of the sides of a polygon- review
- 3 The perpendicular from a point to a line- review
- 4 comparing and bisecting angles- tha angle bisectors of a triangle
- 5 practice test
- 6 correct test
- 7 the perpendicular to a line through a point on the line- constructing an angle congruent to a given angle
- 8 corresponding angles- review
- 9 the line joining the midpoints of two sides fo a triangle- review
- 10 the line through the midpoint...- review
- 11 the line through the mid oing of one side of a triangle...- review
- 12 dividing a segment...- central and inscribed angles
- 13 review- inscribed angles
- 14 practice test
- 15 correct test
- 16 constructing a triangle with sides congruent...- review
- 17 consturcting a triangle with sides half those...- review
- 18 similar triangles- review
- 19 constructing a triangle...- review
- 20 similar equilateral...- review
- 21 the triangle formed by the midpoints...- similar traingles in a circle
- 22 practice test
- 23 correct test

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