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Triangles ALWAYS have 3 sides. The interior angles of a triangle add up to 180 degrees. Here are the triangles you are expected to know about: 1. Equilateral Triangle 2. Isosceles Triangle 3. Right- Angled Triangle 4. Scalene Triangle
Terms in this set (12)
a triangle with three equal sides
and three equal angles 60 degrees
a triangle with two equal sides
so two opposing angles will be equal
One angle in the triangle measures exactly 90 degrees.
a triangle with no two sides of equal length
Triangles ALWAYS have?
-interior angles of a triangle add up to 180 degrees.
If one angle of a triangle is 35 degrees the second 55 degrees the 3rd part must be?
The 3rd part must be 90 degrees because the interior angles must always add up to 180.
a quadrilateral whose opposite sides are parallel and congruent
base times height divided by 2
ONLY 3 different ways a triangle can be
There can be 3 (eqilateral), 2 (Isosceles)or no equal sides/angles (scalene)
Has an angle more than 90°
Has a right angle (90°)
All angles are less than 90°
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