Please help: Given: ∠4 is congruent to ∠2
Prove: ∠3 and ∠1 are supplementary

Statements and Reasons

See Below.

Step-by-step explanation:

We can write a two-column proof.

Statements:                                                Reasons:

                                                  Given

                                                  Vertical Angles are Congruent

                                         Linear Pair

                                         Substitution

                                         Substitution

                 Definition of Supplementary Angles

according to the triangle sum theorem, all the angles in a triangle must add up to 180 degrees. if we know one angle is already 90, we do 180-90=90. the other 2 angles must add up to 90, exactly.

step-by-step explanation:

32/80  

91/140

the last one 54 doesn't go into 45. 54/100 ?

step-by-step explanation: