Think you’ve got your head wrapped around **Congruent Triangles**? Put your knowledge to
the test. Good luck — the Stickman is counting on you!

Q. A triangle's coordinates are *A* (0, 0), *B* (0, 3), and *C* (3, 0). What kind of triangle is ∆*ABC*?

Acute scalene

Obtuse equilateral

Right isosceles

Obtuse isosceles

Acute isosceles

Q. A triangle's coordinates are *A* (-2, 0), *B* (1, 7), and *C* (4, 0). What kind of triangle is ∆*ABC*?

Scalene

Isosceles

Equilateral

Right

None of the above

Q. A triangle's coordinates are *A* (-8, 2), B (3, 9), and C (5, -2). What kind of triangle is ∆*ABC*?

Scalene

Isosceles

Equilateral

Right

None of the above

Q. An equilateral triangle has two points at and (-1, 0). Where will the remaining point be?

(-3, 0)

(-2, 0)

(0, 0)

(1, 0)

(3, 0)

Q. What can be said about ∆*AOB*?

∠*ABO* ≅ ∠*OAB*

∆*AOB* is a right triangle

∆*AOB* is an isosceles triangle

All of the above

Q. If *C* is the midpoint of *AB*, which of the following is true?

The coordinates of *C* are (*a*/2, *b*/2)

The coordinates of *C* are (*b*, *a*)

The coordinates of *C* are (*a*, *b*)

The coordinates of *C* are (*b*, 2*a*)

The coordinates of *C* are (2*b*, *a*)

Q. What is the distance from *A* to *B*?

Q. What is the distance from *C* to the origin?

Q. Which of the following triangles are isosceles?

∆*AOB*

∆*ACO*

∆*BCO*

Both (B) and (C)

(A), (B), and (C)

Q. Which of the following is false?

∆*ACO* ≅ ∆*BCO*

∠*ACO* and ∠*OCB* are supplementary

∠*AOC* and ∠*BOC* are complementary