Hursarachearl
Answered

How can you prove a triangle is an equilateral triangle?

AUse the distance formula to see if at least two sides are congruent.
BUse the slope formula to see if any sides are perpendicular.
CUse the distance formula to see if all three sides are congruent.
DUse the slope formula to see if any sides are parallel.

Verified Answer :

HomertheGenius

We have to use the distance formula: d = sqrt( (x2 - x1)² + ( y2 - y1 )²)
When 2 sides are congruent it could be a scalene triangle, so it is not enough. All 3 sides must be congruent.
Answer:
C. Use the distance formula to see if all three sides are congruent.

Answer:

C. Use the distance formula to see if all three sides are congruent.

Step-by-step explanation:

got it correct on my quiz. ;P

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