Geo H Pre-Proofs Quiz Review

• ∠BDC ≅ ∠BDA (All right angles are ≅)

• ∠ABD ≅ ∠CBD (All right angles are ≅)

• ∠ADB ≌ ∠CDB

• ∠ABD ≌ ∠CBD

4. Given the intersecting segments, what's the conclusion and why?

• ∠1 ≌ ∠3 because vertical angles are congruent

• ∠1 ≌ ∠2 because vertical angles are congruent

• ∠3 ≌ ∠4 because angles of a linear pair are congruent

• ∠1 ≌ ∠2 because angles of a linear pair are congruent

If angles 1 and 2 are complementary, what's the conclusion?

• ∠1 ≌ ∠2

• ∠1 + ∠2 = 90 degrees

• ∠1 + ∠2 = 180 degrees

• ∠1 + ∠2 = 60 degrees

• ∠'s ADB and CDB are ≌ right angles

• ∠'s ABD and CBD are right angles

• ∠PSQ ≌ ∠RSQ

• ∠PSQ and ∠RSQ are complementary

• ∠PSQ and ∠RSQ form a linear pair

• ∠AED ≌ ∠CEB