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Which statement about triangles cannot be proved for all triangles?
if a triangle is acute, then the triangle is equilateral
Are the sides of a triangle prism all congruent?
No. Because two are triangles and three are rectangles. A triangle cannot be congruent to a rectangle!
Are all right triangles equilateral triangles?
no. In fact a right angled triangle cannot be equilateral. An equilateral triangle is also equiangular: that is, all its angles are equal. The sum of all three angles of a [plane] triangle must be 180 degrees and so they cannot be 90 deg each.
Do all triangles have reflection symmetry?
Only if they are in the form of an isosceles or an equilateral triangle.
How do you form 8 triangles from 6 sticks?
Use three sticks to form a triangle. Use the other three sticks to form an inverted triangle and place it on top of the first. You will have two large triangles and six small ones - eight triangles in all. The shape is also known as the Star of David.
