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Triangles are joined together by 3 line segments
Triangles have 3 interior angles that add up to 180 degrees
Triangles have 3 exterior angles that add up to 360 degrees
Triangles have no diagonals
Triangles will tessellate
Triangles can be scalene, obtuse, right angle, isosceles or equilateral
Triangles have a perimeter which is the sum of their 3 sides
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How do you know if triangles are similar?
If they have the same angles, but different side lengths.
Do Similar triangles have proportional angles?
Similar triangles don't just have proportional angles, they have IDENTICAL angles!
When working with congruent triangles why is it only necessary to be given two pairs of congruent angles to know that all three pairs of angles will be congruent?
Because ALL triangles total 180o...
Are triangles equilateral?
Some triangles are equilateral, but not all of them. There are three types of triangles. Triangles which have three equal sides and three equal angles are called equilateral triangles. Isosceles triangles have two equal sides and two equal angles. Scalene triangles have no equal sides and no equal angles.
How many angles are in 8 triangles?
1 triangle = 3 angles. 8 triangles = 8*3 = 24 angles!
