Introduction, formation, definition, measuring angles in degree, types of angle

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LEVEL -1
TOPIC : ANGLE
Name : Saravanan P
Dept no: 22-EDM-16

2. INTRODUCTION

3. In goemetry , there are
various types of angle, based
on measurements.
The names of basic angles are
Acute angle ,Obtuse angle,
Right angle ,Straight angle,
Reflex angle and full rotation

4. An angle is geometricl shape
formed by joining two rays at
their end-points .An angle is
usually measured in degrees
There are various types of
angles in geometry

5. Angles from the core part of
the geometry in mathematics
.They are the fundamentals
that eventually lead to the
formation of the more
complex
geometrical figures and shapes

6. FORMATION OF AN ANGLE
The perception of an angle is formed when two lengths
or lines intersect or when a line change direction
sharply from its original position
We generally indicates this quantity by the
greek alphabet θ, the angular displacement

7. DEFINITION:
The word angle comes from the
latin words angulus which means " a
corner"
An angle is not the space between
the two side lengths but the corner that
makes it up.Space is derived quantity ,
but angle is primary one.It cannot be
derived from more basic units
ANGLES

8. The earliest angle measurements were counted in degrees.
A degree (°) is the angle subtended by an arc of
a circle equal to 1/360 of the circumference of the circle
.Thus there are 360° if the vector is fully extended round a
circle . A minute (') is 1/60 of a degree and a second ('') is
1/60 of a minute ,just like the minute division on a clock
face
MEASURING ANGLES IN DEGREE

9. TYPES OF ANGLE
1)ACUTE ANGLE
2)OBTUSE ANGLE
3) RIGHT ANGLE

10. ACUTE ANGLE

11. An acute angle is defined as an angle that measures less
than 90° degree (i.e) measure between 0° to 90°.Some
°the examples are 60°,30°,45° etc.A triangle formed
by all the interior angles measuring les than 90° is called
an acute triangle.For exxmple ,an equilateral triangle is
an acute triangle .Since the interior angles measures
80°
ACUTE ANGLE

12. OBTUSE ANGLE

13. In geometry, an obtuse angle is defined as an angle
that is greater than 90° and less than 180°. Often
during a day in a 24 hours duration, we can see a
clock framing many obtuse angle degrees between a
minute hand and an hour hand
OBTUSE ANGLE

14. RIGHT ANGLE

15. A right angle is an angle that measures 90°.It is the
most commonly seen angle in our day-to-day life.It
can be seen in the corners of a room ,the edges of
boxes,the screen of a mobile phone ,and so on .The
sides of a square and a rectangle always forms a right
angle with each other .In radition,It is represented as
π/2
RIGHT ANGLE

16. THANK YOU