I don't understand, why did you say that isosceles triangle is any triangle with two or more congruent side? I thought isosceles triangle can only have two congruent sides, cause if all three are congruent sides then that will be equilateral triangles. I am sorry, I am still confused.
@RealMikeDobbs
2 жыл бұрын
Great question! That's a common misconception. In order to be an Isosceles triangle, a triangle MUST have two congruent sides. Of course, Equilateral triangles have all congruent sides, so they also meet the condition to be an Isosceles triangle. It's like a square and a rectangle. All squares are rectangles, but not all rectangles are squares. In the same way, all Equilateral triangles are Isosceles triangles, but only very special Isosceles triangles are equilateral triangles. Equilateral is a more specific classification than just Isosceles. Does that help?
@la_stellae
3 жыл бұрын
what if you have to solve for x?
@RealMikeDobbs
3 жыл бұрын
That's a different type of problem, but essentially, you would use the relationships discussed in this video to find missing angles and then set up an equation you can solve for x.
@wolfeeanime1106
6 жыл бұрын
How would you know that angle 1 and 2 are congruent if it wasn't given?
@RealMikeDobbs
5 жыл бұрын
You wouldn't, that's kind of the game we're playing when doing a proof. We say, here are some things that are true (we call them givens), now can you show that this other thing MUST be true (we call that other thing the "prove statement").
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