# GEOM A, U5L6: Congruence In Right Triangles Quiz PART 1

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question
R, S, and T are the vertices of one triangles. E, F, and F are the vertices of another triangles. mâˆ R = 60, mâˆ S = 80, mâˆ F = 60, mâˆ D = 40, RS = 4, and EF = 4. Are the two triangles congruent? If yes, explain and tell which segment is congruent to lines RT.
A. yes, by ASA; line FD
question
Find the value of x. The diagram is not to scale. Given: RS â‰… ST, mâˆ RST = 7x - 54, mâˆ STU = 8x.
A. 14
question
What additional information will allow you to prove the triangles congruent by the HL Theorem?
C. AC â‰… DC
question
All equilateral triangles are also isosceles.
A. True
question
In an isosceles triangle with two congruent sides, the angles across from the legs are called ____ angles.
base
question
Supply the missing reasons to complete the proof. 3. Î”PRQ â‰… Î”SRT 3. _____ 4. PR â‰… SR 4. _____
3. Angle-Side-Angle (ASA) Postulate, 4. CPCTC
question
Complete the proof by providing the missing statement and reasons. 2. âˆ SDH and âˆ SDT are right âˆ s. 2. ____ 3 SH â‰… ST 3. ____ 4. ____ 4. Reflexive Property 5. Î”SHD â‰… Î”STD 5. ____