## Mrfootballman97 2 years ago One angle of an isosceles trapezoid has measure 57. Find the measures of the other angles.

1. MathLegend

Is there a picture to go with this? @Mrfootballman97

2. MathLegend

Do you know if it is one of the base angles? Or is it the angle at the top of the triangle?

3. Mrfootballman97

Nope

4. MathLegend

Trapezoids sum.. I believe is 360

5. MathLegend

Interior angles sum is 360... right?

6. Mrfootballman97

ahhhhhh ok then. So could the angles be anything as long as they add up to be 360?

7. MathLegend

They can't be any number... we would have to know what Isosceles is.

8. MathLegend

|dw:1354423088562:dw|

9. MathLegend

Opposite angles are Supplementary

10. Mrfootballman97

one guy said this: Since it is an isosceles trapezoid, the base angles are the same. By property of // lines, you can find c and b. ^ (sum of interior angle of // lines = 180 degrees)

11. Mrfootballman97

Callisto was the person

12. MathLegend

He is correct

13. Mrfootballman97

Yup

14. MathLegend

Being that opposite angles are supplementary... we know that Supplementary is 180, right?

15. MathLegend

180 - 57 = 123

16. MathLegend

|dw:1354423249035:dw|

17. Mrfootballman97

so 123 is the top angles measure?

18. Mrfootballman97

Oh i see THANKS!

19. MathLegend

Yes, and if you notice they sum to 360 :)

20. Mrfootballman97

Yup! Thank You!