Math Crossword

The angle between adjacent sides of a rectilinear figure
Same shape but not necessarily the same size
Smaller than a right angle
In a right triangle, the square of the length of the hypotenuse is equal to the sum of the squares of the lengths of the legs
In a right triangle, the side opposite the right angle, the sides that include the right angle; pair of congruent sides
A line that interests two or more lines
A pair of angles that lie on the same side of the transversal and on the same sides of the other two lines
An angle of 180*
More than 90* and less than 180*
90*, as in a coner of a square or at the intersection of two perpendicular straight lines
The amount of space that a substance or object occupies, or that is enclosed within a container especially when great
The outside part or upper most layer of something
Similar in character, form, or function
Identical inform; coinciding exactly when superimposed
Any of the four angles that do not include a region of the space between two lines intersected by a transversal