Lines and Angles IX Maths

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Across
  1. 4. Two parallel lines intersect at:
  2. 5. If two lines intersect each other, then the vertically opposite angles are:
  3. 6. an angle which is 90
  4. 7. if one angle of a triangle is equal to the sum of the other two angles, then the triangle is
  5. 8. Intersecting lines cut each other a
Down
  1. 1. two angles whose sum is equal to 180° are called:
  2. 2. the angles of a triangle are in the ratio 5 : 3: 7. The triangle is
  3. 3. a line joining two endpoints is called: