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### 42 Cards in this Set

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 What are the three types of transformations? Reflection Rotation Translation What is the new figure called after you transform a figure? image What is a prediction based on inductive reasoning? conjecture What parts does a conditional statement have? hypothesis conclusion What is a conditional statement called when the hypothesis is true and the conclusion is false? counterexample What do you call points on the same line? Same plane? Collinear Coplanar What are the three types of lines? Intersecting Parallel Skew What is a line, segment, or ray that intersects a segment at its midpoint? bisector What is the point that divides a segment into 2 congruent segments called? midpoint What is a part of a line with no endpoint called? ray What is a part of a line with 2 endpoints called? segment What do you call an angle that measures 180 degrees? straight angle Name how many congruent sides each triangle has: scalene, isoceles, equilateral. s=none i=at least 2 e=all are congruent How many acute angles does an acute triangle have? 3 What do you call a closed plane figure whose sides are segments that intersect only at their endpoints? polygon What does being a "regular" polygon mean? equilateral equiangular What does "concave" mean? A segment can be drawn outside of the polygon to connect the vertices What is the sum of the exterior angles of any polygon? 360 degrees What are the 2 congruent faces of a prism called that lie in parallel planes? bases What are the other faces of a prism besides the bases called? lateral faces What is the result of cutting a prism along its edges, then opening and unfolding it? NET What type of reasoning uses facts? deductive What do you call a statement that is accepted without proof? postulate What is a conjecture that can be proved to be true? theorem Name the order of statements, starting with "conditional." Conditional (a, b) Converse (b,a) Inverse (a not, b not) Contrapositive (b not, a not) What's the distance formula? ___________________ _/(X2-X1)2 + (Y2-Y1)2 What's the midpoint formula? X1 + X2 Y1 + Y2 _______ + ________ 2 2 What's the slope formula? Y2-Y1 ------- = m X2-X1 What's the formula for the equation of a line? y = mx + b What's the equation of a circle with center (0,0)? X2 + Y2 = R2 What's the equation of a circle with a center that is not (0,0)? (x-h)2 + (y-k)2 = r2 What do you call two circles that have the same center? concentric circles What do you call (x,y,z)? an ordered triple Corresponding angle __________ postulate Alternate Interior Angle __________ Theorem Same side interior angle _______ theorem What are the four types of proofs? Paragraph Flow Two-Column KEY STEPS Name the theorem: if 2 planes are intersected by a third plane, then the lines of intersection are parallel. intersecting planes theorem name the theorem: if two planes are parallel to a third plane, then the two planes are parallel. parallel planes theorem Name the Pythagorean Theorem formula. (A)2 + (B)2 = (C)2 (2 means "squared") What are the two parallel sides of a trapezoid called? bases What are the two non-parallel sides of a trapezoid called? legs