7.1 INTRODUCTION:
- Two congruent figures have exactly the same shape and size.
- If two triangles are congruent, then their corresponding parts are equal.
- Angles opposite to equal sides of a triangle are equal.
- Sides opposite to equal angles are equal.
- The measure of each angle of an equilateral triangle is 60°.
- In a triangle, the sum of any two sides is always greater than the third side.
- In a triangle, the angle opposite to the longer side is bigger.
- In a triangle, the side opposite to the greater angle is the longer.