Key learning points

1. An isosceles triangle has a line of symmetry that splits it into two congruent triangles.
2. In a rhombus each diagonal splits the rhombus into two congruent isosceles triangles bisecting the angles.
3. The two diagonals meet at right angles.
4. The two diagonals bisect each other.

Common misconception

Keywords

• Bisect - To bisect means to cut or divide an object into two equal parts.

• Altitude - The altitude of a triangle is a line segment from a vertex of a triangle to the opposite edge. It is perpendicular to that edge.