Directions: What property explains the mathematical statement below?
Practice
Practice 1
Given: $$ \angle3 = \angle2 $$
Statement: $$ \angle3 − \angle1 = \angle2 − \angle1 $$
What is the reason/justification?
Subtraction property of equality
Practice 1
Given: WY = XZ
Supply the missing reasons below
Given
Subtraction property of equality
Transitive property
Practice 1
Given: $$ \angle A, \angle B $$
Statement: $$ \angle A \cong \angle B $$
What is the reason/justification?
Vertical angles are congruent.
Practice 1
Given: Side AB below
Statement: $$ AB \cong AB $$
What is the reason/justification?
Reflexive property of congruence
Practice 1
Given: $$ \triangle ABC, \triangle ADF $$
Statement: $$ \angle ABC \cong \angle ADF $$
What is the reason/justification?
Reflexive property of congruence
