بوربوينت زوايا المثلث
Angles of a triangle
ØPolygon – a closed many straight-sided figure.
ØAngle – two rays that meet at a common end point.
ØDegree – a unit of measurement of an angle or arc, represented by the symbol º.
Triangle – a polygon with 3 angles and 3 straight sides
ØThe sum of all the angles equals 180º degrees.