A rhombus
The area of a triangle is one-half the product of the triangle's base and height. The height of an equilateral triangle is the distance from one vertex along the perpendicular bisector line of the opposite side. This line divides the equilateral triangle into two right triangles, each with a hypotenuse of 9c and a base of (9/2)c. From the Pythagorean theorem, the height must be the square root of {(9c)2 - [(9/2)c]}, and this height is the same as that of the equilateral triangle.
FHG is isosceles but not necessarily equilateral
The Duval triangle is a diagnostic tool for oil insulated equipment. The three sides of an equilateral triangle form the axes representing the relative concentrations of methane (CH4), ethylene (C2H4) andacetylene (C2H2).The methane concentration is plotted along the axis with a positive gradient, ethylene along the axis with the negative gradient and acetylene along the horizontal axis : but going in the from right to left.The triangle is divided into a number of zones which indicate the most likely cause of failure.The Duval triangle is a diagnostic tool for oil insulated equipment. The three sides of an equilateral triangle form the axes representing the relative concentrations of methane (CH4), ethylene (C2H4) andacetylene (C2H2).The methane concentration is plotted along the axis with a positive gradient, ethylene along the axis with the negative gradient and acetylene along the horizontal axis : but going in the from right to left.The triangle is divided into a number of zones which indicate the most likely cause of failure.The Duval triangle is a diagnostic tool for oil insulated equipment. The three sides of an equilateral triangle form the axes representing the relative concentrations of methane (CH4), ethylene (C2H4) andacetylene (C2H2).The methane concentration is plotted along the axis with a positive gradient, ethylene along the axis with the negative gradient and acetylene along the horizontal axis : but going in the from right to left.The triangle is divided into a number of zones which indicate the most likely cause of failure.The Duval triangle is a diagnostic tool for oil insulated equipment. The three sides of an equilateral triangle form the axes representing the relative concentrations of methane (CH4), ethylene (C2H4) andacetylene (C2H2).The methane concentration is plotted along the axis with a positive gradient, ethylene along the axis with the negative gradient and acetylene along the horizontal axis : but going in the from right to left.The triangle is divided into a number of zones which indicate the most likely cause of failure.
A line of symmetry for a triangle is a line along which a triangle can be folded so that either side of the line is a mirror image shape of the other.An Isosceles triangle, with two equal sides, has a line of symmetry from the center of the base to its opposing vertex.An equilateral triangle with three equal sides has three lines of symmetry, each from the center of a side to its opposing vertex.Any other triangle type, called a scalene triangle, has no lines of symmetry,
An equilateral triangle can be divided in half (along the height or altitude) into two right triangles (30° 60° 90°). The hypotenuse will be equal to one side. The two legs will be equal to the height and 1/2 of a side.So height = side * (√3)/2, and side = height*2/(√3) = (height*2*√3) / 3{Approx: 1.1547 * height}
Trapezoid
trapazoid
A 30-60-90 right triangle
The area of a triangle is one-half the product of the triangle's base and height. The height of an equilateral triangle is the distance from one vertex along the perpendicular bisector line of the opposite side. This line divides the equilateral triangle into two right triangles, each with a hypotenuse of 9c and a base of (9/2)c. From the Pythagorean theorem, the height must be the square root of {(9c)2 - [(9/2)c]}, and this height is the same as that of the equilateral triangle.
It creates a Rhombus
A right-angled triangle can have equal sides, but does not have to. A right-angled triangle with two equal sides CANNOT be an equilateral triangle. A right-angled triangle cannot be an equilateral triangle.Divide a square along the diagonal, and you are left with two right-angled triangles with two sides of equal length.
FHG is isosceles but not necessarily equilateral
Cut it exactly down the middle, along its height, and put one piece aside. The remaining side is a right triangle. The slanting side of the right triangle is a whole side of the original equilateral triangle, the bottom is half of an original side, and the vertical line is the height of the original triangle. Now you have a right triangle and you know the lengths of two of its sides, so you use what you know about right triangles to find the length of the third side, which is the height of the original equilateral triangle. It turns out to be 0.866 times the side of the equilateral triangle. (rounded) Technically, that's (1/2) x (side) x sqrt(3)
The Duval triangle is a diagnostic tool for oil insulated equipment. The three sides of an equilateral triangle form the axes representing the relative concentrations of methane (CH4), ethylene (C2H4) andacetylene (C2H2).The methane concentration is plotted along the axis with a positive gradient, ethylene along the axis with the negative gradient and acetylene along the horizontal axis : but going in the from right to left.The triangle is divided into a number of zones which indicate the most likely cause of failure.The Duval triangle is a diagnostic tool for oil insulated equipment. The three sides of an equilateral triangle form the axes representing the relative concentrations of methane (CH4), ethylene (C2H4) andacetylene (C2H2).The methane concentration is plotted along the axis with a positive gradient, ethylene along the axis with the negative gradient and acetylene along the horizontal axis : but going in the from right to left.The triangle is divided into a number of zones which indicate the most likely cause of failure.The Duval triangle is a diagnostic tool for oil insulated equipment. The three sides of an equilateral triangle form the axes representing the relative concentrations of methane (CH4), ethylene (C2H4) andacetylene (C2H2).The methane concentration is plotted along the axis with a positive gradient, ethylene along the axis with the negative gradient and acetylene along the horizontal axis : but going in the from right to left.The triangle is divided into a number of zones which indicate the most likely cause of failure.The Duval triangle is a diagnostic tool for oil insulated equipment. The three sides of an equilateral triangle form the axes representing the relative concentrations of methane (CH4), ethylene (C2H4) andacetylene (C2H2).The methane concentration is plotted along the axis with a positive gradient, ethylene along the axis with the negative gradient and acetylene along the horizontal axis : but going in the from right to left.The triangle is divided into a number of zones which indicate the most likely cause of failure.
that's easy its a triangle * * * * * That is such a nonsensical answer! A triangle is not even a polyhedron. The correct answer is an octahedron - two square based pyramids stuck together along their bases.
The flag of Puerto Rico is a rectangle with an equilateral triangle placed with one side along the left edge of the rectangle. The triangle is blue with a single white star in the middle. The part of the rectangle not "covered by the triangle has a red stripe along the top and bottom and in the middle. Between the red stripes are two white stripes. All stripes are of equal thickness.
A line of symmetry for a triangle is a line along which a triangle can be folded so that either side of the line is a mirror image shape of the other.An Isosceles triangle, with two equal sides, has a line of symmetry from the center of the base to its opposing vertex.An equilateral triangle with three equal sides has three lines of symmetry, each from the center of a side to its opposing vertex.Any other triangle type, called a scalene triangle, has no lines of symmetry,