Which property is shared by a square and an equilateral triangle?
- A.All angles are right angles
- B.All sides are equal ✓
- C.They have four sides
- D.They have two lines of symmetry
Explanation: A square has 4 equal sides and an equilateral triangle has 3 equal sides — both have all sides equal. The other options don't hold for both shapes.
Class 6 IMO Mathematics Olympiad practice · Geometry & Spatial Thinking · Symmetry & Shape Properties
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