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Geometric Proofs

Complete the crossword and master your definitions.
Across
A pair of _________ angles are a reflection of each other over their vertex.
These pair of angles can be exterior or interior of the parallel lines on the same side of the transversal.
Property that states if you subtract the same number to both sides of an equation then the equation is still true.
Two angles whose sum is 180°.
A line that cuts angles and other segments in half.
Property that states if you add the same number to both sides of an equation then the equation is still true.
A line that intersects parallel lines.
Two angles whose sum is 90°.
Property that states if you multiply both sides of an equation by the same number then the equation is still true.
Lines that intersect at a right angle.
If ∠A+∠B≅180° and ∠A≅∠C then by the __________ property ∠C+∠B≅180°.
Definition of _____________ states m∠A=m∠B then ∠A≅∠B
Property that states AB≅AB
Property that states if you divide both sides of an equation by the same number then the equation is still true.
Down
The property that states if A=B and B=C then A=C
These pair of angles can be exterior or interior of the parallel lines on opposite sides of the transversal.
A ________ pair of angles form a straight angle.
Angles that are in the same position on a pair of parallel lines.
Favorite Math teacher.
Property that states if 5=x then x=5.