Question

how many lines of symmetry does each triangle have? no lines of symmetry 1 line of symmetry 3 lines of symmetry

Explanation:

Step1: Analyze the green triangle

It is a scalene triangle. A scalene triangle has no lines of symmetry as all its sides and angles are of different measures.

Step2: Analyze the red triangle

It is an isosceles triangle. An isosceles triangle has 1 line of symmetry which is the line that bisects the vertex angle and is also the perpendicular bisector of the base.

Step3: Analyze the blue triangle

It is an equilateral triangle. An equilateral triangle has 3 lines of symmetry. Each line passes through a vertex and the mid - point of the opposite side.

Answer:

1. Green triangle: No lines of symmetry.
2. Red triangle: 1 line of symmetry.
3. Blue triangle: 3 lines of symmetry.