an angle is formed when two lines intersect at a point called the vertex.

angle properties on straight lines, intersecting lines and angles around a point

types of angles: acute, obtuse, reflex etc.


Key Skills

  • identify and name different types of angles.
  • know the angle properties associated with lines.
  • solve problems involving angle properties.


vertexdegree, complementary, supplementary, adjacent, acute, right angle, obtuse angle, reflex angle, congruent.