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How can you prove a triangle is isosceles?
How can you prove a triangle is isosceles?

Group of answer choices

Use the distance formula to see if at least two sides are congruent.

Use the slope formula to see if any sides are perpendicular.

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

Use the slope formula to see if any sides are parallel.

Sagot :

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Answer:

 (a)  Use the distance formula to see if at least two sides are congruent

Step-by-step explanation:

You want to know how you can prove a triangle is isosceles.

Isosceles triangle

A triangle is isosceles if two sides are congruent, or if two angles are congruent. Hence one way to prove a triangle is congruent is ...

Use the distance formula to see if at least two sides are congruent, choice A.

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Additional comment

Sides of a right triangle are perpendicular. A triangle may be a right triangle without being isosceles, so showing sides are perpendicular is not helpful.

Sides of a triangle are never parallel.

While it is true that an equilateral triangle, with all sides congruent, is an isosceles triangle, the triangle may be isosceles without being equilateral.

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