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### 37 Cards in this Set

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 What type of angle measures less than 90 degrees? acute Write the converse: If I like school, then I am cool. If I am cool, then I like school. adjacent angles in a parallelogram are? supplementary How do you find the maximum area of a rectangle? Divide the perimeter by four, then square the number (multiply times itself) linear pair 180 degrees together Write the first statement for an indirect proof of: All rectangles are parallelograms. All rectangles are not parallelograms. vertical angles make an X and are congruent when across from each other If a+3>5, then a >2. Subtraction property of inequality. If a=b, and b=c, then a = c. Transitive property How do you know if 2 lines are parallel? same slope If q then p is the same as ? If ~p then ~ q. What type of angle measures exactly 90 degrees? right vertical angles make an X and are congruent when across from each other What is the greatest number of pieces of pizza you can make using 3 straight cuts? 7 How many different ways can three people sit around a table? 6 If the area of a triangle is 48 and the base is 12, find the height. A=1/2bh 8 angles that measure 180 degrees together supplementary what is the median of a triangle? segment from a vertex to the opposite side that intersects at the midpoint opposite angles in a parallelgram are? congruent How many right angles can there be in a triangle? 1 not p ~p If xy=bc, then bc=xy. Symmetric property angles that measure 90 degrees together complementary What type of angle measures more than 90 degrees? obtuse If ab=ab, then ab=ab. Reflexive property What are the 3 undefined terms in geometry? point, line, plane Write the inverse of: If I like school, then I am cool. If I don't like school, then I am not cool. How many obtuse angles can there be in a triangle? 1 Find the distance between 2 points. use the distance formula: the square roof of: (x2-x1)to the second power + (y2-y1)to the second power. How do you know if 2 lines are perpendicular? opposite reciprocal slopes Write the contrapositive: If I like school, then I am cool. If I am not cool, then I do not like school. What are skew lines? Lines that do not intersect and are not parallel If a then b and a is true, what is b? (true/false) true what is an altitude of a triangle? perpendicular distance from a vertex to the opposite side what is the pythagorean theorem? a squared plus b squared equals c squared Could 3 sides of a triangle be 12,12,and 12? yes- equilateral triangle If a + b = c + b, then a=c. The subtraction property of equality.