Triangle Mandouli
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- Pages: 12
Construction and
Properties of
Triangle
TRIANGLE Geometric figure consisting of three points, called vertices, connected by three sides. The term triangle is used to describe a geometric figure having three vertices and sides
ISOSCELES TRIANGLE
In isosceles triangle the angles opposite the equal sides are equal
SCALENE TRIANGLE
A scalene triangle has three sides of unequal lengths
EQUILATERAL TRIANGLE
An equilateral triangle has three equal sides and three equal angles.
ACUTE ANGLE
Acute angles are less than 90 degrees.
45
65
70
RIGHT ANGLE
90
A right triangle is a triangle in which one angle is a right angle. The side opposite the right angle is called the hypotenuse.
OBTUSE ANGLE TRIANGLE
110
In Obtuse angled triangle one angle is greater than 90 degrees others are two are angles are 90
CONSTRUCTION OF ISOSCALENE TRIANGLE TRIANGLE ABC IN WHICH AB=7, BC=5, CA=5 STEP1: Draw a line AB=7
A
7 cm
B
CONSTRUCTION OF ISOSCALENE TRIANGLE STEP2: Draw arc from A and B of 5 cm which cut at C C
A
7 cm
B
CONSTRUCTION OF ISOSCALENE TRIANGLE STEP3: Join AC and BC
C 5cm
5cm
A
7 cm
B
GOVT HIGH SCHOOL MANDOULI NAME:HARDEEP KAUR, REKHA RANI CALSS - 9TH B COMPUTER TEACHER: JASPREET KAUR
Properties of
Triangle
TRIANGLE Geometric figure consisting of three points, called vertices, connected by three sides. The term triangle is used to describe a geometric figure having three vertices and sides
ISOSCELES TRIANGLE
In isosceles triangle the angles opposite the equal sides are equal
SCALENE TRIANGLE
A scalene triangle has three sides of unequal lengths
EQUILATERAL TRIANGLE
An equilateral triangle has three equal sides and three equal angles.
ACUTE ANGLE
Acute angles are less than 90 degrees.
45
65
70
RIGHT ANGLE
90
A right triangle is a triangle in which one angle is a right angle. The side opposite the right angle is called the hypotenuse.
OBTUSE ANGLE TRIANGLE
110
In Obtuse angled triangle one angle is greater than 90 degrees others are two are angles are 90
CONSTRUCTION OF ISOSCALENE TRIANGLE TRIANGLE ABC IN WHICH AB=7, BC=5, CA=5 STEP1: Draw a line AB=7
A
7 cm
B
CONSTRUCTION OF ISOSCALENE TRIANGLE STEP2: Draw arc from A and B of 5 cm which cut at C C
A
7 cm
B
CONSTRUCTION OF ISOSCALENE TRIANGLE STEP3: Join AC and BC
C 5cm
5cm
A
7 cm
B
GOVT HIGH SCHOOL MANDOULI NAME:HARDEEP KAUR, REKHA RANI CALSS - 9TH B COMPUTER TEACHER: JASPREET KAUR
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