1. The _______ of a right triangle is the side of the triangle that is opposite the right angle.

1. A ____________ is an angle whose measure is 90°. A ________ is usually indicated by a small square at the vertex of the angle.

1.    The __________ states that the sum of the squares of the lengths of the two legs of a right triangle (a and b) is equal to the square of the length of the hypotenuse  $a^2\ +\ b^2\ =\ c^2$  

1. is a statement formed by interchanging what is given in a theorem and what is to be proved. For example, the Pythagorean Theorem states that if you have a right triangle, then $a^2+b^2=c^2$ . The _____________ states that if  $a^2+b^2=c^2$  then the triangle is a right triangle, switching what is known and what is proven. 

1. The distance between two points is the length of a straight line segment that links them. The _________ of a point from a line is the length of the shortest line segment from the point to the line. This will also be perpendicular to the line.