What is the Division Property of Equality?

If $$a = b$$ and @@c eq 0 $$, then $$ rac{a}{c} = rac{b}{c}@@.

What is the Angle Addition Postulate?

If point D is in the interior of $$\triangle ABC$$ , then $$m\triangle ABD + m\triangle DBC = m\triangle ABC$$ .

What is the Definition of Complementary Angles?

Two angles are complementary if the sum of their measures is 90 degrees.

What is the Vertical Angles Theorem?

Vertical angles are congruent; if two angles are opposite each other when two lines intersect, they are equal.

What is the Definition of Congruence?

Two figures are congruent if they have the same shape and size.

What is the Complement Theorem?

If two angles are complementary to the same angle (or to congruent angles), then they are congruent.

What is the Definition of Midpoint?

The midpoint of a segment is the point that divides the segment into two equal parts.

What is the Definition of an Angle Bisector?

An angle bisector is a ray that divides an angle into two equal angles.

Angle and Segment Proofs

Flashcard

•

Mathematics

•

9th - 12th Grade

•

Practice Problem

•

Easy

•

CCSS

7.G.B.5, HSA.REI.A.1, 4.G.A.1

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FLASHCARD QUESTION

Front

What is the Definition of Perpendicular Lines?

Back

Two lines are perpendicular if they intersect to form a right angle (90°).

Tags

CCSS.4.G.A.1

CCSS.HSG.CO.A.1

FLASHCARD QUESTION

Front

What is the Definition of a Right Angle?

Back

A right angle is an angle that measures exactly 90 degrees.

Tags

CCSS.4.G.A.1

FLASHCARD QUESTION

Front

What is the Definition of Supplementary Angles?

Back

Two angles are supplementary if the sum of their measures is 180 degrees.

Tags

CCSS.7.G.B.5

FLASHCARD QUESTION

Front

What is the Symmetric Property of Congruence?

Back

Tags

CCSS.8.G.A.2

FLASHCARD QUESTION

Front

What is the Addition Property of Equality?

Back

Tags

CCSS.HSA.REI.A.1

FLASHCARD QUESTION

Front

What is the Subtraction Property of Equality?

Back

Tags

CCSS.HSA.REI.A.1

FLASHCARD QUESTION

Front

What is the Multiplication Property of Equality?

Back

Tags

CCSS.HSA.REI.A.1

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