Const
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CONSTRUCTION OF
TRIANGLE
B Step1:-Draw a line BX and cut a line .
X
B
a cm
C
X
Step2:- Open the compass a cm and cut a line Segment of BC=a Size .
Y
Q B
a cm
C
Step 3: Draw a angle X BY=Thita
X
Y
D
x cm
B
a cm
C
X
Step 4:Open the compass x cm and cut a line Segment of BD=x Size from BY.
Y
D
x cm
B
a cm
Step 5: Join C and D
C
X
Y
D
x cm
B
a cm
C
X
Step 6: Open the compass more than the half length of CD and mark a curve.
Y
D
x cm
B
a cm
C
X
Step 7: Open the compass more than the half length of CD and mark a curve.
Y
D
x cm
B
a cm
C
X
Step 8: Open the compass more than the half length of CD and mark a curve.
Y
D
x cm
B
a cm
C
X
Step 9: Open the compass more than the half length of CD and mark a curve.
Y
D
x cm A
B
a cm
C
X
Step 10: Draw a Perpendicular CD so it cut the BD on A.
Y
D
x cm A
B
a cm
C
X
Step 11: Draw a Perpendicular CD so it cut the BD on A.
Y
D
x cm A
B
a cm
C
X
Step 12: Draw a Perpendicular CD so it cut the BD on A.
Y
D
x cm A
B
a cm
C
Step13: Join the point A and C
X
Y
D
x cm A
B
a cm
C
Step14: Join the point A and C
X
Y
D
x cm A
B
a cm
C
ABC is the required triangle
X
PROPERTIES OF
TRIANGLE
SCALENE TRIANGLE
THIS TRIANGLE HAS NO EQUAL SIDES .
ALTITUDE TRIANGLE
IT IS DRAWN FROM A VERTEX PERPENDICULAR TO THE OPPOSITE SIDES
ISOSCELES TRIANGLE
THIS TRIANGLE HAS TWO EQUAL SIDES
BISECTOR TRIANGLE
THIS TRIANGLE IS DIVIDES AN ANGLE INTO TWO EQUAL SIDES
OBTUSE TRIANGLE
THIS TRIANGLE HAS ONE ANGLE IS MORE THAN 90
EQUILATERAL TRIANGLE
THIS TRIANGLE HAS THREE EQUAL SIDES
RIGHT TRIANGLE
THIS TRIANGLE HAS ONE ANGLE IS EQUAL TO 90 DIGREE
ALTITUDE TRIANGLE
IT IS A DRAWN FROM A VERTEX PERPENDICULAR TO THE OPPOSITE SIDE
MEDIAN TRIANGLE
IT IS DRAWN A VERTEX TO THE MIDPOINT OF THE OPPOSITE SIDE
PERPENDICULAR BISECTOR TRIANGLE
IT IS DRAWN PERPENDICULAR TO A SIDE THROUGH ITS MIDPOINT
SPHERICAL TRIANGLE
A TRIANGLE DRAWN ON THE SURFACE OF A SPHERE
TRIANGLE
A FIGURE WITH THREE ARBITARY CURVES
THE END GOVT.SEC.SCHOOL GHANAUR MONIKA RANI , RENU KUMARI & KAWALJIT KAUR KAMALJEET KAUR,PINKI RANI, JYOTI BANSAL CLASS 9TH
TRIANGLE
B Step1:-Draw a line BX and cut a line .
X
B
a cm
C
X
Step2:- Open the compass a cm and cut a line Segment of BC=a Size .
Y
Q B
a cm
C
Step 3: Draw a angle X BY=Thita
X
Y
D
x cm
B
a cm
C
X
Step 4:Open the compass x cm and cut a line Segment of BD=x Size from BY.
Y
D
x cm
B
a cm
Step 5: Join C and D
C
X
Y
D
x cm
B
a cm
C
X
Step 6: Open the compass more than the half length of CD and mark a curve.
Y
D
x cm
B
a cm
C
X
Step 7: Open the compass more than the half length of CD and mark a curve.
Y
D
x cm
B
a cm
C
X
Step 8: Open the compass more than the half length of CD and mark a curve.
Y
D
x cm
B
a cm
C
X
Step 9: Open the compass more than the half length of CD and mark a curve.
Y
D
x cm A
B
a cm
C
X
Step 10: Draw a Perpendicular CD so it cut the BD on A.
Y
D
x cm A
B
a cm
C
X
Step 11: Draw a Perpendicular CD so it cut the BD on A.
Y
D
x cm A
B
a cm
C
X
Step 12: Draw a Perpendicular CD so it cut the BD on A.
Y
D
x cm A
B
a cm
C
Step13: Join the point A and C
X
Y
D
x cm A
B
a cm
C
Step14: Join the point A and C
X
Y
D
x cm A
B
a cm
C
ABC is the required triangle
X
PROPERTIES OF
TRIANGLE
SCALENE TRIANGLE
THIS TRIANGLE HAS NO EQUAL SIDES .
ALTITUDE TRIANGLE
IT IS DRAWN FROM A VERTEX PERPENDICULAR TO THE OPPOSITE SIDES
ISOSCELES TRIANGLE
THIS TRIANGLE HAS TWO EQUAL SIDES
BISECTOR TRIANGLE
THIS TRIANGLE IS DIVIDES AN ANGLE INTO TWO EQUAL SIDES
OBTUSE TRIANGLE
THIS TRIANGLE HAS ONE ANGLE IS MORE THAN 90
EQUILATERAL TRIANGLE
THIS TRIANGLE HAS THREE EQUAL SIDES
RIGHT TRIANGLE
THIS TRIANGLE HAS ONE ANGLE IS EQUAL TO 90 DIGREE
ALTITUDE TRIANGLE
IT IS A DRAWN FROM A VERTEX PERPENDICULAR TO THE OPPOSITE SIDE
MEDIAN TRIANGLE
IT IS DRAWN A VERTEX TO THE MIDPOINT OF THE OPPOSITE SIDE
PERPENDICULAR BISECTOR TRIANGLE
IT IS DRAWN PERPENDICULAR TO A SIDE THROUGH ITS MIDPOINT
SPHERICAL TRIANGLE
A TRIANGLE DRAWN ON THE SURFACE OF A SPHERE
TRIANGLE
A FIGURE WITH THREE ARBITARY CURVES
THE END GOVT.SEC.SCHOOL GHANAUR MONIKA RANI , RENU KUMARI & KAWALJIT KAUR KAMALJEET KAUR,PINKI RANI, JYOTI BANSAL CLASS 9TH
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