Geometry

Geometry

Kinds of triangles

Geometry

Kinds of triangles

Geometry

Kinds of triangles

equilateral

Geometry

Kinds of triangles

equilateral

equiangular

Geometry

Kinds of triangles

Geometry

Kinds of triangles

isoscelesAt least two congruent sides.

Geometry

Kinds of triangles

Geometry

Kinds of triangles

scaleneNo congruent sides.

Geometry

Kinds of triangles

acute obtuse right

Geometry

Kinds of triangles

acute obtuse right

Geometry

more definitions

Geometry

polygons

Geometry

polygons

not polygons

Geometry

vertex

Geometry

altitude

Geometry

altitude

Every triangle has three altitudes.

Geometry

median

Geometry

median

Every triangle has three medians.

Geometry

segment bisector

A B

Geometry

angle bisector

A

B

C

Z

Geometry

theorems

GeometryThe sum of the angles of a

triangle is always 180o.

A

CB

m└A + m└B + m└C = 180

GeometryEach exterior angle of a triangle

is equal to the sum of the remote interior angles.

A

CB

m└D = m└A + m└C

D

GeometryLarger sides are opposite

larger angles.

GeometrySmaller sides are opposite

smaller angles.