The sides of an isosceles triangle are 3 and 7. The circumference of the triangle is______ .
(1) If 3 is the waist length and 7 is the base length, the triangle does not exist because 3 + 3 < 7; (2) if 7 is the waist length, the sum of the two sides of the triangle is greater than the third side. Therefore, the perimeter of the triangle is 7 + 7 + 3 = 17
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- 16. If the length of the third stick is even, how to make it () species?
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- 19. It is known that the median line on the waist of an isosceles triangle is divided into two parts with circumference of 20 and 36. Find the length of the bottom and waist of the triangle I remember again, Set: waist a, bottom B 0.5a+b=20 a+0.5a=36 、/ A = 24 b=8 2; 0.5a+a=20 0.5A + B = 36 does not hold
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