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How many right angles in a equilateral triangle?
None
How many lines of symmetry are in a scalene triangle?
a scalene triangle has no lines of symmetry
What is the linear relationship between number of sides and number of lines of symmetry?
If you're talking about convex polygons with equal sides (eg. equilateral triangles, squares, pentagons, hexagons, etc.), then the relationship is a very direct one. In those cases, there are as many lines of symmetry as there are points in the polygons. A triangle has three lines of symmetry, a square has four, a pentagon five, etc.
How many sets of perpendicular lines are in a right triangle?
There is only one set of perpendicular lines in a right triangle; the horizontal line and the vertical line that make it 90 degrees.
If equilateral triangle has an area of 9 root 3 square inches How many inches is the perimeter?
Area of equilateral triangle = (b x h)/2 = 9√ 3 sq in For an equilateral triangle, b2 = h2 + (b/2)2 = h2 + b2/4 h2 = 3b2/4 : h = (b/2)√ 3 Substituting for h in the Area formula [b x (b/2)√ 3]/2 = 9√ 3 : b2/4 = 9 : b2 = 36 : b = 6 Therefore the perimeter measures 3 x 6 = 18"
