Question 1032785
If two angles are supplementary and congruent,then they are right angles.     True or False?
--------
True::
x + y = 180 (supplementary)
x = y  (congruent)
------------------
Substitute for x and solve for "y"::
y + y = 180
2y = 180
y = 90 degrees
---
Since x = y , x = 90 degrees also.
------------
Cheers,
Stan H.
---------------