9514 1404 393
Answer:
the diagonals are congruent
Step-by-step explanation:
If the base angles of a trapezoid are congruent, it is an isosceles trapezoid. It will be symmetrical about its center line. Each half of the trapezoid is identical (mirror image) to the other half. The diagonals are the same length.
If you're trying to solve for y
-2y = 8
Divide -2 to both sides
Cancel out the -2 on the left, Divide the -2 to the 8 on the right so
y = -4
You are finding 3 1/6 - 1 5/6.
To solve, you should first change it so that the numerator of the first fraction is greater than the numerator of the second. Note that both have the same denominator (6). Subtract as usual:
3 1/6 = 2 7/6
2 7/6 - 1 5/6 = 1 2/6
1 2/6 is your answer.
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D) 61 degrees
the two angles not touching the exterior angle add up to be the exterior angle therefore you plug in each of the answers by adding them to 57 until you get 118
57+61=118
