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timama [110]
2 years ago
15

20 points help pls thxxx

Mathematics
1 answer:
nika2105 [10]2 years ago
3 0

Answer:

1. x=70

2. x=70

3. x=60

4. x=40

5. x=10

6. x=6

7. x=12

8. x=9

9. 88

10. 76

Step-by-step explanation:

1. Isosceles triangles have two sides equal to each other. If the unequal side is 40 degrees and there are 180 degrees in a triangle, 180-40=140/2=70 degrees for the other two sides.

2. Same explanation as 1.

3. Equilateral triangles all have the same degrees. If 60 is the degree for one angle, it is the degree for the other two as well.

4. Same explanation as 1.

5. All side length of an equilateral triangle are the same. If the side length of one side is 10, the other two sides are 10 too.

6. Same explanation as 5, but with 6 as the side length.

7. It is an isosceles triangle and two sides are equal. Since one side is 12 and the other side is the second of the equal sides, the side length would be 12

8. Same explanation as 7, but with 9 as the side length.

9. 180-46=134-46(other side length)=88 (remaining side length)

10. 2x+2+2x+2+3x+1=7x+5. 7x+5=180. 180-5=175. 175/7=25. 3(25)+1=76.

Hope this helps!!

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