What does it mean for two lines to be perpendicular?
Intro to Proofs Review

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Mathematics
•
11th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
Two lines are perpendicular if they intersect at a right angle (90 degrees).
2.
FLASHCARD QUESTION
Front
What is the definition of a midpoint?
Back
A midpoint is a point that divides a line segment into two equal parts.
3.
FLASHCARD QUESTION
Front
What does the ASA triangle congruence theorem state?
Back
The ASA (Angle-Side-Angle) theorem states that if two angles and the included side of one triangle are congruent to two angles and the included side of another triangle, then the two triangles are congruent.
4.
FLASHCARD QUESTION
Front
What is the definition of congruence in geometry?
Back
Congruence means that two figures have the same shape and size, and can be made to coincide by rigid transformations (translations, rotations, reflections).
5.
FLASHCARD QUESTION
Front
What is the Transitive Property?
Back
The Transitive Property states that if a = b and b = c, then a = c.
6.
FLASHCARD QUESTION
Front
What is the Substitution Property?
Back
The Substitution Property states that if two quantities are equal, one can be substituted for the other in any expression.
7.
FLASHCARD QUESTION
Front
What does the SSS triangle congruence theorem state?
Back
The SSS (Side-Side-Side) theorem states that if three sides of one triangle are congruent to three sides of another triangle, then the two triangles are congruent.
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