Geometry

1234567
Across
  1. 2. equal angles
  2. 4. 3 congruent sides are called?
  3. 5. Unknown verbal
  4. 7. If sin A=y then Sin(-1)=m<A
Down
  1. 1. If tan A=x, then tan(-1) x=m<A
  2. 3. A square is a ?
  3. 6. Same midpoint means they?