1. CHAPTER V Relation between line and line, line and Angle, Angle and Angle, and determining the size.

2. Matematika SMP Kelas 1  Page 2 (1. Line and Angle) a. Two parallel lines b. Two intersecting lines c. Two closed lines d. Two crossing lines 1. Position of Two Lines A. Line 2. Horizontal and Vertical lines The position of pole and the arm part describe horizontal and vertical line. The arm part shows position of horizontal line, and the pole shows vertical line.

3. Matematika SMP Kelas 1  Page 3 - Through one point outside of a line, we can pull one line that parallel to the line. -If one line cuts one of the two parallel lines, so the line also will cut the other line. -If one line is parallel to two other lines therefore the two lines also will be parallel to each other. 3. Characteristics of parallel line a.Dividing line into same length line. b.Dividing line with a certain comparison. 4. Dividing one lines

4. Matematika SMP Kelas 1  Page 4 Generally: On ABC behaving the following comparison. 1. AD : DB = AE : EC or 2. AD : AB = AE : AC or 3. BD : DA = CE : EA or 4. BD : BA = CE : CA or 5. AD : AB = AE : AC = DE : BC or B. Line segment comparison

5. Matematika SMP Kelas 1  Page 5 C. Angle Angle is a field formed by a companion of two rays or two straight lines 1. Definition of angle The size of angle can be noted as degree unit ( o ), minute(‘), and second(‘’). 2. Besar Sudut To sum or subtract angle unit, each degree unit, minute, and second must be put in one line. 3. Sum and subtraction on Angle unit D. Drawing and giving name for angle In measuring an angle, we need a tool named graduated arc.

6. Matematika SMP Kelas 1  Page 6 E. Kinds of angle a.b.c.d. e. Reflect angle is an angle of more than 180 o and less than 360 o

7. Matematika SMP Kelas 1  Page 7 F. Relation of angle Total of two lines that are supplemented each other is 180 o.The one line is a supplement of another line. 1. Pairs of angle that are supplemented each other Total of two angle that are complemented each other is 90 o. The one line is the complement of another line. 2. Pairs of angle that are complemented each other If there are two intersected line, the two angles located on back of intersected point are called two contrary angles. Two angles that are contrary are same. 3. Pairs of angle that are contrary

8. Matematika SMP Kelas 1  Page 8 G. Relation among the angles if two lines are intersected by other line If two parallel lines are intersected by other line, it will form four pairs of corresponding lines with same size. 1. Corresponding and adjacent angles If two parallel lines intersected by other line, the amount of the angles is 180 o. 2. Inner and outer unilateral angle

9. Matematika SMP Kelas 1  Page 9