This presentation discusses the properties of triangles. It begins with an introduction that defines a triangle as a closed figure with three line segments and three vertices. It then classifies triangles based on their sides as equilateral, isosceles, or scalene triangles. Additional classifications are made based on angles, including right-angled, acute-angled, and obtuse-angled triangles. The presentation describes key geometric elements of triangles, such as medians that connect vertices to midpoints of opposite sides, altitudes that are perpendicular lines from vertices to opposite sides, and the property that exterior angles equal the sum of their two interior opposite angles.

1. PRESENTATION
ON THE
TRIANGLE AND
ITS PROPERTIES
MADE BY
N SAI DEEPAK
&
N sai deepika

2. INTRODUCTION TO TRIANGLES
Sides AB ,BC ,CA
Vertices A,B,C
Angles ABC ,BCA ,CAB
CB
A A triangle is a closed figure made
of three line segments.

3. CLASSIFICATION OF TRIANGLE
SIDES
ANGLES

4. CLASSIFICATION OF TRIANGLES
BASED ON SIDES
EQUILATERAL TRIANGLE
ISOSCELES TRIANGLE
SCALENE TRIANGLE

5. DIFFERENT TYPES OF TRIANGLES
EQUILATERAL
TRIANGLE
ISOSSELES
TRIANGLE
SCALENE TRIANGLE
RIGHT – ANGLED
TRIANGLE
ACUTE -ANGLED
TRUIANGLE
OBTUSE –ANGLED
TRIANGLE

6. MEDIAN OF TRIANGLE
A MEDIAN OF CONNECTS A VERTEX OF A
TRIANGLE TO THE MID – POINT OF THE OPPOSITE
SIDE.
THE TRIANGLE HAS THREE MEDIANS

7. ALTITUDES OF TRIANGLE
THE PERPENDICULAR LINE SEGMENT FROM A
VERTEX TO ITS OPPOSITE SIDE IS CALLED ALTITUDE
OF TRIANGLE.

8. EXTERIOR ANGLE OF TRIANGLE
THE EXTERIOR ANGLE OF TRIANGLE IS EQUAL TO
THE SUM OF ITS TWO INTERIOR OPPOSITE ANGLES .
d IS EXTERIOR ANGLE