This document defines different types of angles and their measurements. It explains that an angle is formed by two rays with a common endpoint called the vertex. The main types of angles are acute, right, obtuse, straight, reflex, and 360° angles. Acute angles are less than 90°, right angles are 90°, obtuse angles are greater than 90° but less than 180°, straight angles are 180°, reflex angles are greater than 180° but less than 360°, and 360° angles span the entire circle. Examples and definitions are provided for each type of angle.

3. ASSIGNMENT
CREDITS

4. ASSIGNMENT
CREDITS

5. ASSIGNMENT
CREDITS

6. ASSIGNMENT
CREDITS

7.  name, identify the
characteristics and illustrate
different types of angles
 summarize using a table
 define angle and it’s part

8. An angle is a set of all points
that is the union of two rays
having the same endpoint.

9. Above fig. shows angle ABC.
The point where the rays intersect is called
the vertex of the angle. Here B is vertex. The
two rays are called the arms of the angle.
Here BA and BC are arms of angle ABC.
A
(Vertex) B
C
arm
(Vertex) B
A
(Vertex) B

10. TYPES
OF
ANGLES
Acute angle
Right angle
Obtuse angle
Straight angle Reflex angle
360° angle &
Zero angle

11. Acute angle
Right angle
Obtuse angle
Straight angle Reflex angle
360° angle
TYPES
OF
ANGLES

12. TYPES
OF
ANGLES
Right angle
Obtuse angle
Straight angle Reflex angle
360° angle
Acute angle
An Acute
Angle is less
than 90°
CLICK FOR EXAMPLE

13. TYPES
OF
ANGLES
Right angle
Obtuse angle
Straight angle
360° angle
WHAT IS AN ACUTE ANGLE?

14. TYPES
OF
ANGLES
Acute angle
Right angle
Straight angle Reflex angle
360° angle
Obtuse angle
An Obtuse
Angle is more
than 90° but less
than 180°
CLICK FOR EXAMPLE

15. TYPES
OF
ANGLES
Acute angle
Right angle
Straight angle
360° angle
Obtuse angle

16. TYPES
OF
ANGLES
Acute angle
Right angle
Obtuse angle
Straight angle Reflex angle
360° angle &
Zero angle
360°ANGLE measures
360 degrees, also called
Complete Angle.
 Zero ANGLE measures
0 degrees. CLICK FOR EXAMPLE

17. TYPES
OF
ANGLES
Acute angle
Right angle
Obtuse angle
Straight angle Reflex angle
360° angle &
Zero angle
WHAT is 360° ANGLE and
Zero ANGLE?

18. Acute angle
Obtuse angle
360° angle
TYPES
OF
ANGLES
Right angle
Reflex angle
Straight angle
A straight
angle is 180
degrees
CLICK FOR EXAMPLE

19. Acute angle
Obtuse angle
360° angle
TYPES
OF
ANGLES
Right angle
A straight
angle is 180
degrees
WHAT IS A STRAIGHT ANGLE?

20. TYPES
OF
ANGLES
Acute angle
Obtuse angle
Straight angle Reflex angle
360° angle
A right angle is an
internal angle which
is equal to 90°
CLICK FOR EXAMPLE
Right angle

21. TYPES
OF
ANGLES
Acute angle
Obtuse angle
Right angle
WHAT IS A RIGHT ANGLE?

22. TYPES
OF
ANGLES
Acute angle
Right angle
Obtuse angle
Straight angle
360° angle
Reflex angle
A Reflex Angle is
more than 180° but
less than 360°
CLICK FOR EXAMPLE

23. TYPES
OF
ANGLES
Acute angle
Right angle
Obtuse angle
Straight angle
360° angle
Reflex angle
WHAT IS A REFLEX ANGLE?

28. 1) An angle whose measure is between
0 and 90 is called _____ angle.
A. Acute
B. Right
C. Obtuse
D. Reflex
Exercise

33. 2) An angle whose measure is
90 is called ______angle.
A. Acute
B. Right
C. Obtuse
D. Reflex
Exercise

38. 3) An angle whose measure is
more than 90 but less than 180 is
called _______ angle.
A. Acute
B. Right
C. Obtuse
D. Reflex
Exercise

43. 4) A reflex angle is always greater
than ______ but less than 360 .
A. 0
B. 90
C. 180
D. 360
Exercise

48. 5) Which of the following is
an acute angle.
A. 0
B. 45
C. 90
D. 260
Exercise

53. 6) What is the measure of
straight angle.
A. 0
B. 90
C. 180
D. 360
Exercise

58. 7) Which of the following is
reflex angle.
A. 0
B. 45
C. 90
D. 260
Exercise

65. JOVEN P. DE ASIS
BSE- MATHEMATICS
SINAYAWAN,
VALENCIA CITY,
BUKIDNON
19 YEARS OLD
JULY 24, 1999

66. RONALYN A. GANTAO
BSE- MATHEMATICS
POBLACION,
IMPASUGONG,
BUKIDNON
19 YEARS OLD
MAY 13, 1999

67. 360 angle

68. ASSIGNMENT

69. Above fig. shows angle ABC.
The point where the rays intersect is called
the vertex of the angle. Here B is vertex.
The two rays are called the arms of the angle.
Here BA and BC are arms of angle ABC.
A
B C
arm
A

70. Above fig. shows angle ABC.
The point where the rays intersect is called
the vertex of the angle. Here B is vertex. The
two rays are called the arms of the angle.
Here BA and BC are arms of angle ABC.
A
(Vertex) B
C
arm
(Vertex) B
A
(Vertex) B

72. Angles are measured in units called degrees,
using a measuring device called the protractor. To
measure an angle, place the center point of the
protractor on the vertex of an angle to be measured.
Line up the mark labelled 0 on either scale with one
side of the angle. Then read the scale where it falls on
the other side of the angle.