With a 20% discount, Ella was able to save $40 on a dress. What was the original price of the dress?
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There is only one triangle possible having angle 50, 50, 80.
<h3>What is isosceles triangle?</h3>
An Isosceles Triangle has the following properties:
- Two sides are congruent to each other.
- The third side of an isosceles triangle which is unequal to the other two sides is called the base of the isosceles triangle.
- The two angles opposite to the equal sides are congruent to each other.
It is given that, 2 angles of a triangle as:
∠1 = 50°
∠2 = 80°
Now we know the Angle sum property of a triangle that sum all three interior angle in a triangle is .
i.e., ∠1+∠2+∠3= .
So, 50° +80°+ ∠3 =
∠3 = 50°
As two angles of the triangle are equal that means it is a isosceles triangle.
There is no possibility of getting a right angles triangle.
Hence, there is only one triangle possible with these measurements .
Learn more about triangles here:
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