Study Flashcards
Polygons
3 or more sides
A closed 2D shape
Straight sides
Sum of triangle angles
180 degrees
Equilateral triangle
All sides equal in length with all angles 60 degrees
Isosceles triangle
Two sides and angles are equal in length.
Scalene triangle
All angles and sides different in length.
Right angle triangle
One angle 90 degrees
Obtuse angle triangle
One angle obtuse because otherwise sum of angle will be over 180 degrees
Acute angled triangle
All angles less than 90 degrees sides are not equal
Quadrilateral
Closed 2D shape with 4 sides
Square
All angles are right angles and all sides equal in length
Rectangle
All angle 90 degrees (right angles) two opposite sides equal in length.
Parrellogram
Parrellogram has 2 opposite sides equal in length and 2 opposite sides Parrell to each other.
Rhombus
2 opposite sides of Parrell lines. All sides equal in length
Kite
2 opposite equal lines. 2 equal angles (opposite)
Sum of angle in quadrilateral
360 degrees