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Yes- but not all isosceles triangles are right triangles. Isosceles means that two sides are the same length, and two angles are the same.
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Professor
Blake
DevinThe geometrical figures, including isosceles triangles, are congruent if they are identical in shape and size.
If they are of the same shape but not of the same size, then they are similar triangles. For two similar triangles, there is a correspondence between their vertices such that corresponding angles are equal and the ratios of the corresponding sides are equal.
Thus, not all isosceles triangles are congruent.
No. For a triangle to be isosceles, it must have 2 angles both equal to x, and one angle equal to y where 2x + y = 180o. For two triangles to be similar, they must have all 3 angles equal.
An example of 2 triangles which are both isosceles, yet not similar are triangle ABC with angles 50o, 50o and 80o, and triangle DEF with angles 40o, 40o and 100o.
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Are all isosceles triangles congruent?
no because isosceles triangles only have two congruent sides and the other one is different
What is the name of the geometric solid with four faces that are congruent triangles?
Isosceles TetrahedronA solid with four faces is a tetrahedron. Each of the faces is a triangle. If all the triangles are congruent, you have an isosceles tetrahedron.
Are some isosceles triangles equilateral triangles?
All isosceles triangles are not equilateral triangles
Can an equilaterial triangle also be an isoseles triangle?
An isosceles triangle has two congruent sides, and An equilateral triangle is a special isosceles triangle in which all three sides are congruent.Therefore, all equilateral triangles are isosceles
What are the properties of isosceles triangles?
All isosceles triangles: - Have angles that add up to 180 degrees - Have two equal sides. The unequal side is called the base. - Have equal base angles. - Have areas and perimeters that can be found using the formulas Area=1/2 X (base X height) and Perimeter=side+side+side An equilateral triangle with a right angle is called a right isosceles triangle. Also, all equilateral triangles are isoceles triangles, but not all isosceles triangles are right triangles.
