Both have 3 sides
Both have 3 interior acute angles that add up to 180 degrees
Both have 3 exterior angles that add up to 360 degrees
Both will individually tessellate
Both have a perimeter which is the sum of their 3 sides
Both have an area which is 0.5*base*perpendicular height
Both have no diagonals
Both are subjected to the rules of trigonometry
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Click on the link for equilateral acute triangle.
Yes, because an equilateral triangle is always acute.
An equilateral triangle has three acute (60 degree) angles.
Yes it can. Every equilateral triangle is an acute one. To put it another way, the family of acute triangles includes all equilateral ones.
Aren't all equilateral triangles acute??