Sifat – Sifat Pada Segitiga

The Properties Of Triangle (Sifat – Sifat Pada Segitiga)

a.         berdasarkan sisi  (base on the side):

1.         segitiga sama sisi ( equilateral triangle)

-           all the sides is in equals length

-           has 3 angles in equals size (600)

-           the sum of its three angles is 1800(degree)

-           has three axis symmetries

-           has three  symmetry rotations

-           can be filled into the frame in 6 ways

           

2.         segitiga sama kaki ( isosceles triangle)

-           has  two sides in  equal length

-           the sum of its three angle is 180⁰

-           has two angles in equals  size

-           has one (1) axis symmetry

-           has one (1) symmetry rotation

-           can be filled into the frame in 2 ways

3.         segitiga sembarang ( scalene triangle)

-           all the sides is not in  equal length

-           the sum of its three angles is 180⁰

-           has no one axis symmetry

-           has one (1) symmetry rotations

-           can be filled into the frame in 1 way

b.  berdasarkan sudut  (base on angle):

1.         segitiga siku-siku ( right  triangle)

-           has one angle in 90⁰ ( right angle)

-           the sum of all its angle is 180^{0 ( degree)}

-           has one (1) symmetry rotations

-           can be filled into the frame in 1 way

2.         segitiga lancip ( acute  triangle)

-           has three acute angles in 0⁰ < x < 90⁰

-           the sum of all its angle is 180^{0 ( degree)}

-           has one (1) symmetry rotations

-           can be filled into the frame in 1 way

3.         segitiga tumpul ( obtuse  triangle)

-           has one angles in 90⁰ < x < 180⁰

-           the sum of all its angle is 180^{0 ( degree)}

-           has one (1) symmetry rotations

-           can be filled into the frame in 1 way

c.       berdasarkan sudut dan sisinya  (base on angle and side):

1.         segitiga siku-siku sama kaki ( isosceles right triangle)

-           has one angle in 90⁰ ( right angle)

-           the sum of all its angle is 180^{0 ( degree)}

-           has 2 sides in equals length

-           has one (1) axis symmetry

-           has one (1) symmetry rotations

-           can be filled into the frame in 2 ways

b.         segitiga lancip  sama kaki ( isosceles acute triangle)

-           has three acute angles in 0⁰ < x < 90⁰

-           the sum of all its angle is 180^{0 ( degree)}

-           has 2 sides in equals length

-           has one (1) axis symmetry

-           has one (1) symmetry rotations

-           can be filled into the frame in 2 ways

c.         segitiga tumpul   sama kaki ( isosceles obtuse triangle)

-           has one angles in 90⁰ < x < 180⁰

-           the sum of all its angle is 180^{0 ( degree)}

-           has 2 sides in equals length

-           has one (1) axis symmetry

-           has one (1) symmetry rotations

-           can be filled into the frame in 2 ways