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Space Race
Defend Earth from alien invaders
transformation
An operation that moves or changes a geometric figure in some way to produce a new figure

equilateral triangle
A triangle with three congruent sides

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congruent
Figures where all parts of one figure are congruent to the corresponding parts of the other figure.

hypotenuse
The side opposite the right angle in a right triangle. It is the longest side.

reflection
A transformation that uses a line of reflection to create a mirror image of the original figure

rotation
A transformation that turns a figure about a fixed point called the center of rotation

scalene triangle
A triangle with no congruent sides.

acute triangle
A triangle with three acute angles

translation
A transformation that moves every point of a figure the same distance in the same direction

right triangle
A triangle with one right angle

vertex
The angle formed by the legs in an isosceles triangle

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corollary
A statement that can be easily proven using a theorem

SSS
Postulate used to prove triangles are congruent if all 3 sets of corresponding sides are congruent.

SAS
Postulate used to prove triangles are congruent if 2 sets of corresponding sides and their included angles are congruent.

HL
Postulate used to prove right triangles are congruent if the hypotenuse and a leg of one right triangle are congruent to the corresponding parts of another right triangle

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