​Master the calculation of area and perimeter for triangles in this comprehensive guide! We start with the fundamental area formula (1/2)*base*height emphasizing the crucial role of perpendicular height.

The video covers detailed examples on:

• Using Pythagoras to find missing sides in right-angle triangles.

• Applying properties of isosceles triangles (perpendicular bisector).

• Calculating area and perimeter for compound shapes (rectangles + triangles).

• Solving algebraic problems by finding area/perimeter in terms of x.

• Working backwards from a known area to determine a missing base or perpendicular height.

 

Essential geometry skills for intermediate level mathematics for grade 8 and 9 learners doing the CAPS. IEB and  IGCSE Curricula