The 3 interior angles of any triangle always add up to 180 degrees
None
No because the 2 angles do not add up to 90 degrees
a triangle has 0 lines of symmetry.
No such thing as a four-sided triangle !
The internal angles of a triangle add up to 180 degrees so in an equilateral triangel each internal angle must be 60 degrees, as 3 x 60 = 180.
A triangle has 3 vertices and 3 interior angles that add up to 180 degrees
None
3
The three angles of a triangle add to 180 degrees. If two of them add to 140 degrees then the third must be 180 - 140 = 40 degrees.
The answer will depend on which angle is 63 degrees, and the measurement units used for c.
what is 3-D triangel called?
Just one.
No because the 2 angles do not add up to 90 degrees
Is the triangel kill alot of poeple?
no because an equalateral triangel is equal to all sides and an iscoselise trangel has only 2 equal sides.
three line of symmetry
just one