1. Angles

2. Measure the Angle 300 Acute angle < 900 90 CM 6 5 4 3 2 1 7 8 9 10
120
130 50
170 20
160 30
150 40
140 60 70
110 80
100
300
Acute angle < 900

3. Measure the Angle 450 Acute angle < 900 90 CM 6 5 4 3 2 1 7 8 9 10
120
130 50
170 20
160 30
150 40
140 60 70
110 80
100
450
Acute angle < 900

4. Measure the Angle 900 Right angle = 900 90 CM 6 5 4 3 2 1 7 8 9 10 120
130 50
170 20
160 30
150 40
140 60 70
110 80
100
900
Right angle = 900

5. Measure the Angle 1400 Obtuse angle > 900 90 CM 6 5 4 3 2 1 7 8 910
120
130 50
170 20
160 30
150 40
140 60 70
110 80
100
Obtuse angle > 900

6. Straight angle (straight line) = 1800
Measure the Angle 90 CM 6 5 4 3 2 1 7 8 9 10
120
130 50
170 20
160 30
150 40
140 60 70
110 80
100
1800
Straight angle (straight line) = 1800

7. Supplementary Angles: two angles whose sum is 180090 CM 6 5 4 3 2 1 7 8 9 10
120
130 50
170 20
160 30
150 40
140 60 70
110 80
100 90 CM 6 5 4 3 2 1 7 8 9 10
120
130 50
170 20
160 30
150 40
140 60 70
110 80
100
1500
300
= 1800
Supplementary Angles: two angles whose sum is 1800

8. Complementary Angles: two angles whose sum is 900
600 90 CM 6 5 4 3 2 1 7 8 9 10
120
130 50
170 20
160 30
150 40
140 60 70
110 80
100 90 CM 6 5 4 3 2 1 7 8 9 10
120
130 50
170 20
160 30
150 40
140 60 70
110 80
100
Complementary Angles: two angles whose sum is 900
300
= 900

9. Vertical Angles 90 CM 6 5 4 3 2 1 7 8 9 10
120
130 50
170 20
160 30
150 40
140 60 70
110 80
100 90 CM 6 5 4 3 2 1 7 8 9 10
120
130 50
170 20
160 30
150 40
140 60 70
110 80
100
1000
1000
Vertical Angles: across from each other and are the same measure

10. Vertical Angles 90 CM 6 5 4 3 2 1 7 8 9 10
120
130 50
170 20
160 30
150 40
140 60 70
110 80
100
800 90 CM 6 5 4 3 2 1 7 8 9 10
120
130 50
170 20
160 30
150 40
140 60 70
110 80
100
800

11. Supplementary Angles: two angles whose sum is 1800
1300 x
500
Supplementary Angles: two angles whose sum is 1800
500 + x = 1800
x = 1300

12. Supplementary Angles: two angles whose sum is 1800
The angle = 1200, x = 40 3x
600
Supplementary Angles: two angles whose sum is 1800
3x = 1800
3x = 1200
x = 400

13. Complementary Angles: two angles whose sum is 900x
400
500
Complementary Angles: two angles whose sum is 900
500 + x = 900
x = 400

14. Complementary Angles: two angles whose sum is 900
The angle = 700, x = 600
x + 10
200
Complementary Angles: two angles whose sum is 900
x = 900
x = 900
x = 600

15. Vertical Angles: across from each other and have the same measure
1100 x
Vertical Angles: across from each other and have the same measure
x = 1100

16. Vertical Angles: across from each other and have the same measure
600
The angle = 600, x = 150 4x
Vertical Angles: across from each other and have the same measure
4x = 600
x = 150