A triangle with three equal sides is called a () triangle（ A triangle with three equal sides is called a () triangle, also called a () triangle

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• 1. A triangle with two equal sides is called (). The two equal sides are called (). The other side is called ()?
• 2. What are two equal triangles and two equal sides?
• 3. A triangle with two equal sides is called a () triangle, and a triangle with two equal sides is called a () triangle（ A triangle with two equal sides is called a triangle. The two equal sides are called a triangle. The other side is called a triangle. The angle between the two waists is called a triangle. The two angles on the bottom are called a triangle
• 4. Using Green's formula is not counter clockwise, why doesn't it hold Can't you add a minus sign?
• 5. Find dy / DX = (X-Y + 5) / (x + Y-2)
• 6. dy/dx,y=(1+x+x^2)e^x
• 7. dy/dx-y/x=x^2 Ask for detailed solution steps
• 8. (cosx+1/y)dx+(1/y-x/y^2)dy=0
• 9. Let y = f (x, t), and T = t (x, y) be determined by F (x, y, t) = 0 f. F are differentiable functions
• 10. General solution of differential equation dy / DX = 2x-y
• 11. We know that a triangle with two equal sides is called an isosceles triangle. Similarly, we define that at least one set of quadrilaterals with equal opposite sides is called an isosceles quadrilateral. (1) please write down the name of a special quadrilateral you have learned that is an isosceles quadrilateral; (2) as shown in the figure, in △ ABC, points D and E are on AB and AC respectively. Let CD and be intersect at point O, if ∠ A = 60 °, DCB = ∠ EBC = 12 ∠ A. please write an angle equal to ∠ a in the graph, and guess which quadrilateral in the graph is an equal opposite quadrilateral; (3) in △ ABC, if ∠ A is an acute angle not equal to 60 °, points D and E are on AB and AC respectively, and ∠ DCB = ∠ EBC = 12 ∠ A. explore whether there is an equal opposite quadrilateral in the graph satisfying the above conditions, and prove your conclusion
• 12. A triangle with is called an isosceles triangle
• 13. Equilateral triangles are also called______ Triangle, each inner angle is equal to______ °．
• 14. What is the high line of a triangle
• 15. In general, we call () triangle elements
• 16. The side on which () is located is called the bottom of the triangle
• 17. Let the variable upper limit integral ∫ (0, x) f (T ^ 2) DT = x ^ 3, then 2 ∫ (0,1) DX =? Sorry, wrong number. If the variable upper limit integral ∫ (0, x) f (T ^ 2) DT = x ^ 3, then 2 ∫ (0,1) f (x) DX =?
• 18. Let f (x) be continuous on (0, π / 2) (closed interval), f (x) = xcosx + ∫ f (T) DT, then ∫ f (x) DX has upper limit and lower limit π / 2 The upper limit is flat π / 2 and the lower limit is 0
• 19. Let f (x) be continuous on the interval [a, b], then the value of ∫ f (x) DX - ∫ f (T) DT (the interval is [a, b]) is?
• 20. Let f (x) be continuous on the interval [a, b], and prove that 1 / (B-A) ∫ f (x) DX ≤ (1 / (B-A) ∫ F & # 178; (x) DX) ^ & # 189;