<span>for an equilateral triangle you need to know that:
- Sides are equal a = b = c (figure 1)
- Each angle is 60 degrees (figure 1)
- Height led from the top of the base of the triangle divide into two identical special right triangles on Measures angles 30,60,90 degrees. (figure 3)
</span>triangle with angles : 30°,60° , 90°<span> is the length of the sides :
1 a = a catheus (red)
2 b = a</span>√3 catheus (red)
<span>3 c = 2a hypotenuse
</span><span>the product of the hypotenuse of the triangle is the value of the surface of an equilateral triangle
</span>
P = a*b = (1/2*68cm*√3)*(1/2*68cm) = (34√3cm) * (34cm) = 1156√3cm²
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You can use the model
<span>as soon as I add attachments - drawings</span>
- Sides are equal a = b = c (figure 1)
- Each angle is 60 degrees (figure 1)
- Height led from the top of the base of the triangle divide into two identical special right triangles on Measures angles 30,60,90 degrees. (figure 3)
</span>triangle with angles : 30°,60° , 90°<span> is the length of the sides :
1 a = a catheus (red)
2 b = a</span>√3 catheus (red)
<span>3 c = 2a hypotenuse
</span><span>the product of the hypotenuse of the triangle is the value of the surface of an equilateral triangle
</span>
P = a*b = (1/2*68cm*√3)*(1/2*68cm) = (34√3cm) * (34cm) = 1156√3cm²
for notebook
You can use the model
<span>as soon as I add attachments - drawings</span>
