Unit Test — Unit test Answers

Triangles D E F and D prime E prime F prime are connected at point E. Triangle D E F is rotated about point E to form triangle D prime E prime F prime.

The base angle of an isosceles triangle measures 54°. What is the measure of its vertex angle?

A line extends from a side of a triangle.

Triangles A B C and E D C are shown. Triangle A B C is rotated about point C to form triangle E D C.

Consider the diagram.

Triangle DEF is isosceles, where . Angle FDE is bisected by segment DG, creating angle GDE with a measure of 29°.

Triangle B C D is shown. Line D B extends through point A to form exterior angle A B C. Angle B D C is 67 degrees and Angle C D B is 60 degrees.

Triangles A B C and N M Q are shown. Sides B C and N M are congruent. Angles A B C and Q N M are congruent. Angles B C A and N M Q are both right angles.

Which congruence theorem can be used to prove △BDA ≅ △DBC?

The proof that UX ≅ SV is shown.Given: △STU an equilateral triangle∠TXU ≅ ∠TVSProve: UX ≅ SVWhat is the missing statement in the proof?StatementReason1. ∠TXU ≅ ∠TVS1. given2. ∠STV ≅ ∠UTX2. reflex. prop.3. △STU is an equilateral triangle3. given4. ST ≅ UT4. sides of an equilat. △ are ≅5. ?5. AAS6. UX ≅ SV6. CPCTC

Which congruence theorems can be used to prove ΔABR ≅ ΔACR? Select three options.

A triangle has side lengths measuring 2x + 2 ft, x + 3 ft, and n ft.

A triangle with exterior angles is shown. The bottom right angle of the triangle is (3 h + 18) degrees. The bottom right exterior angle is (15 h) degrees.

Triangles A B C and A B F are congruent. Triangle A B C is reflected across line B A to form triangle A B F.

Which diagram shows possible angle measures of a triangle?

Consider the diagram.

Given: ∠GHD and ∠EDH are right; GH ≅ ED

Consider the diagram.

Consider the diagram.

Triangles ABC and DBC have the following characteristics: BC is a side of both triangles∠ACB and ∠DCB are right anglesAC ≅ DC