An angle with the measure greater than 0 degrees and less than 90 degrees.
What is an acute angle.
100
The triangle congruence condition when all three pairs of corresponding sides have equal lengths.
What is SSS.
100
The angles that lie on the opposite sides off an intersection point when two lines intersect.
What are vertical angles.
100
sin A / a = sin B / b = sin C / c
What is The Law of Sines.
100
A special right triangle whose side lengths are in the ratio of 1:/3:2
What is a 30-60-90 triangle.
200
Formed by two rays joined at a common endpoint.
What is an angle.
200
The triangle congruence that occurs when two pairs of corresponding sides have equal lengths and the angles between them are equal.
What is SAS.
200
A statement based on an educated guess that is unproven.
What is a conjecture.
200
A ratio of an angle A equal to the length of adjacent side/length of the hypotenuse.
What is cosine.
200
Angles between a pair of lines that switch sides of a transversal that are congruent if the pair of lines are parallel.
What are alternate interior angles.
300
A line segment or ray with an endpoint at the vertex of the angle that divides the angle into two equal pieces.
What is an angle bisector.
300
The triangle congruence when two angles and the sides between then in a triangle are congruent to the corresponding angles and side in another triangle.
What is ASA.
300
A conjectures, or statement, written in the form "if ..., then..."
What is a conditional statement.
300
A ratio , B, that is equal to the length of the opposite side/ the length of the hypotenuse.
What is sine.
300
Divides geometric objects into two congruent parts.
What is a bisector.
400
Any angle that measures between (but not including) 90 degrees and 180 degrees.
What is an obtuse angle.
400
A triangle congruence that occurs when two pairs of corresponding angles and a pair of corresponding sides that are not between then have equal measures.
What is AAS.
400
By switching the hypothesis and the conclusion, from an if-then statement, gives you the ________ of a conditional statement.
What is the converse.
400
A ratio, C, that is equal to the length of the opposite side/ the length of the adjacent side.
What is tangent.
400
The fixed point from which all points on a circle are equidistant.
What is the center of a circle.
500
Two angles whose measures add up to 90 degrees..
What are complementary angles.
500
When the hypotenuse and a leg of one right triangle have the same lengths as the hypotenuse and a leg of another right triangle.
What is HL.
500
The ratio if the vertical distance to the horizontal distance indicating steepness and direction.
What is slope.
500
When the ratio between the lengths of two sides of a right triangle is known, this can be used to find the measure of one of the triangle's acute angles.
What is the inverse function.
500
In three dimensions, a line segment formed by the intersection of two faces of a polyhedron.