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.

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.

Common misconception