No. But they can be the lengths of the three sides.
10 in
an isosceles triangle is a triangle with two of its sides equal and one side different such as a triangles sides that measure as 10 cm 10 cm and 7cm, this would be an isosceles triangle as one of the sides is not the same length as the other two, hope this helped :)
If the "length" of this triangle is the distance from the base to the vertex of the two other sides, it is 100 units^2. (1/2*10*20) if the 'length' is not the aforementioned distance, you do not have enough information.
A triangle has 3 sides.
By definition, an equilateral triangle has all three sides of equal length! So it is impossible for it to have sides of length 10 inches and 7 inches!
No. But they can be the lengths of the three sides.
10 in
an isosceles triangle is a triangle with two of its sides equal and one side different such as a triangles sides that measure as 10 cm 10 cm and 7cm, this would be an isosceles triangle as one of the sides is not the same length as the other two, hope this helped :)
No because the 3 sides of an equilateral triangle must be the same length.
With an altitude of 10 units, this triangle's sides each measure 11.55 (11.54701) units.
If the "length" of this triangle is the distance from the base to the vertex of the two other sides, it is 100 units^2. (1/2*10*20) if the 'length' is not the aforementioned distance, you do not have enough information.
That depends on what is meant by length of AD but the 3 sides of an equilateral triangle are all equal in lengths.
10
10 1/2
The sum of the two shorter sides of a triangle must be longer than the third. Thus the third side can be any length greater than 0 and less than 20. Examples are 0.5, 2, 5, 10, 15, 17.5, 19.9.
There is a problem with your question, namely that such a triangle does not exist. An equilateral triangle with sides of length 10 would have a height of 5 * (root 3), which is approx 8.66 (not 7 as the question states). An equilateral triangle of side length 10 inches would have an area of 25*(root 3), which is approx. 43.3 inches2.