Classified by angles
Right Triangle-has one 90 degree angle
Acute Triangle-all angles are less than 90 degrees
Obtuse Triangle-has one angle more than 90 degrees
Classified by sides
Scalene Triangles-no sides are the same
Equilateral Triangles-all sides are the same
Isosceles Triangle-at least two sides are the same
Special Segments of Triangles
Altitude-a perpendicular segment from a vertex to the opposite side or to a line containing the opposite side
Median-connects the vertex to the midpoint of the opposite side.
Angle Bisector in a triangle-cuts an angle in half.
Kite-A quadrilateral with two different pairs of consecutive congruent sides.
Trapezoid-A quadrilateral with exactly one pair of parallel sides.
Parallelogram-A quadrilateral with two pairs of parallel sides
Rectangles-A quadrilateral with two pairs of parallel sides and all angles congruent
Rhombus-A quadrilateral two pairs of parallel sides and all sides congruent
Square-A quadrilateral with two pairs of parallel sides, all sides congruent, and all angles congruent; a regular quadrilateral
Right Triangle-has one 90 degree angle
Acute Triangle-all angles are less than 90 degrees
Obtuse Triangle-has one angle more than 90 degrees
Classified by sides
Scalene Triangles-no sides are the same
Equilateral Triangles-all sides are the same
Isosceles Triangle-at least two sides are the same
Special Segments of Triangles
Altitude-a perpendicular segment from a vertex to the opposite side or to a line containing the opposite side
Median-connects the vertex to the midpoint of the opposite side.
Angle Bisector in a triangle-cuts an angle in half.
Kite-A quadrilateral with two different pairs of consecutive congruent sides.
Trapezoid-A quadrilateral with exactly one pair of parallel sides.
Parallelogram-A quadrilateral with two pairs of parallel sides
Rectangles-A quadrilateral with two pairs of parallel sides and all angles congruent
Rhombus-A quadrilateral two pairs of parallel sides and all sides congruent
Square-A quadrilateral with two pairs of parallel sides, all sides congruent, and all angles congruent; a regular quadrilateral