No triangle. A triangle must have 3 angles that add up to 180 degrees, and three and only three sides, with no sides parallel.
they are two dimensional shapesthey are trianglesthey have three sidestheir interior angles add up to 180 degreestheir exterior angles add up to 360 degreesthey have at least two sides of different lengthsRight triangle: three sided two dimensional shape with one right angleScalene triangle: three sided two dimensional shape with three sides of different lenghtsBeing Scalene and being Right are not mutually exclusive. A Scalene triangle can also be a Right triangle, and vice versa.
Add the lengths of the three individual sides.
Add up the sides.
Three angle and three sides that are closed is a triangle. interior angles add up to 180 exterior anglis add up to 900
ALL triangles have three sides and three angles. The three angles always add up to 180 degrees. A right angled triangle has one 90 degree right angle and two smaller angles. No triangle can have any parallel sides. An equilateral triangle has three equal sides and therefore three equal 60 degree angles.
Depending on the sizes who knows
No triangle. A triangle must have 3 angles that add up to 180 degrees, and three and only three sides, with no sides parallel.
Square the two smaller sides and add them together. Take the square root of the answer. If that is the same as the third side then you have a right angled triangle and if not, then you have not.
they are two dimensional shapesthey are trianglesthey have three sidestheir interior angles add up to 180 degreestheir exterior angles add up to 360 degreesthey have at least two sides of different lengthsRight triangle: three sided two dimensional shape with one right angleScalene triangle: three sided two dimensional shape with three sides of different lenghtsBeing Scalene and being Right are not mutually exclusive. A Scalene triangle can also be a Right triangle, and vice versa.
That's a triangle in which all three sides have three different lengths.
you add up the measures of the sides Perimeter=a+b+cAdd up the three sides together
Add the lengths of the three sides together.
Add up the three sides.
180
-- Make sure you have the lengths of all three sides -- Add up the lengths of all three sides to get the perimeter of the triangle.
You add together the lengths of its three sides.