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37 Cards in this Set
 Front
 Back
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: (x2x1)to the second power + (y2y1)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.
