Geometry crossword puzzle

 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

Across
1.Two angles that share a common vertex/side
4.A four sided plane with opposite sides parallel
6.You can only make one triangle
7.Opposite angles formed by intersecting lines
11.Two lines in the same plane that do not intersect
12.Angles in the same position formed when a third line intersects an equal number of sides
13.A plane figure with four straight sides and four right angles
16.A angle that measures more than 90 degrees
18.You can make a infinite amount of triangles from one triangle
20.The sum of the angles is 180 degrees
Down
2.The sum of the angles equals exactly 90 degrees
3.A line that intersects two or more lines that lie in the same plane
5.A rectangle with four congruent sides
8.A quadrilateral with exactly one pair of parallel sides
9.Measures exactly 180 degrees
10.The angles formed by two intersecting lines that measure 90 degrees
14.A parallelogram with opposite equal obtuse angles
15.Angles that measure less than 90 degrees
17.Angles that measure exactly 90 degrees
19.Lines that do not intersect and are not parallel and are in different planes

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