# 9th Math Chapter 11 to 17

Unit 11: Parallelograms and Triangles

Theorem 11.1.1, 11.1.2, 11.1.3, 11.1.4, 11.1,5, with corollaries, Ex. 11.1, 11.2,  11.3,  11.4,  11.5,  Review Ex. 11

Unit 12: Line bisectors and angle bisectors

Introduction, Right bisector of a line segment and Bisector of an angle, Theorem 12.1.1, 12.1.2, 12.1.3, 12.1.4, 12.1.5, 12.1.6, Ex12.1, 12.2, 12.3, Review EX# 12.

Unit 13: Side and Angles of a Triangle

Theorem 13.1.1, 13.1.2, 13.1.3, 13.1.4, and Corollaries, EX# 13.1, 13.2, Review EX# 13.

Unit 14: Ration and Proportion

Theorem 14.1.1, 14.1.2, 14.1.3, 14.1.4 and Corollaries, EX# 14.1, 14.2, Review EX# 14.

Unit 15: Pythagoras Theorem

Theorem# 15.1.1, 15.1.2, EX# 15, Review EX# 15.

Introduction, Some Preliminaries (Area of Triangular Region, Congruent Area axiom, Rectangular Region between the same parallels,

Unit 16: Pythagoras Theorem (Page 249 – 256) Theorem# 16.1.1, 16.1.2, EX# 16.2, Review EX# 16.

Unit 17: Practical Geometry

Drawing angle bisector, Altitude, Perpendicular bisector, and medians of given triangles, EX# 17.2. Figures with Equal Areas EX# 17.3, 17.4, 17.5, Review EX# 17.

Figures with Equal Areas EX# 17.3, 17.4, 17.5, Review EX# 17.