Upload
kavita-grover
View
160
Download
1
Tags:
Embed Size (px)
DESCRIPTION
Elements of a Triangle Types of Triangles Properties of Triangles Angle sum property of a Triangle Side property of a Triangle
Citation preview
Class VKavita Grover
1Kavita Grover
Elements of a TriangleSidesSide ABSide BCSide CA
Angles ABC ACB BAC
Vertices A,B,C
A
B C
2Kavita Grover
Types of Triangles
Based on sides
Based on angles
Equilateral
Isosceles
Scalene Acute
Right -angled
Obtuse
3Kavita Grover
Review ExerciseTick the correct option.1) A triangle is formed by joining
a) 3 points b) 3 collinear pointsc) 3 linesd) 3 non collinear points
4Kavita Grover
5Kavita Grover
3) How will you denote a side AB of a triangle
a) Line ABb) ABc) ABd) Side AB
6Kavita Grover
4) The given triangle is
a) Obtuse angle triangle
b) Scalene trianglec) Isosceles triangled) Acute angle
triangle
7Kavita Grover
Answers
1) b
2) c
3) b
4) d
8Kavita Grover
9Kavita Grover
Angle sum property of a TriangleThe sum of the angles of a triangle is 180˚.
A
B C
A+ B+ C = 180˚
A
B
C
A+ B+ C= 180˚
10Kavita Grover
Side property of a TriangleThe sum of the lengths
of any two sides is always greater than the length of the third side .
Side AB= 5cmSide BC= 5cmSide CA= 5 cmAB+BC >CA 5cm+5cm >5cm10 cm>5cm
BC+CA>AB5cm+5cm >5cm10cm>5cm
A
B C11Kavita Grover
Side AB=4.5cmSide BC=7cmSide CA=5cmSide AB+BC>AC4.5cm+7cm>5cm11.5cm>5cm
A
B
C
12Kavita Grover