Test Review Triangles

Test Review Triangle (Exterior & Interior Sum Theorem; Isosceles & Equilateral Triangles)

Classify by Sides

Multiple Choice

Classify by its sides...choose the best choice.

• equilateral, isosceles, scalene

• isosceles, scalene, equilateral

• scalene, equiltateral, isosceles

• actue, obutse, right

Multiple Choice

Choose the answer, (reading from left to right)

• obtuse, right, equiangular, acute

• acute, obtuse, right, equiangular

• right, scalene, acute

• equiangular, right, acute,obtuse

Multiple Choice

Solve for x.

• 182

• 128

• 28

• 13

Multiple Choice

Solve for x.

• 7

• 18

• 20

• 5

Multiple Choice

Find: m<A , m<B, and m<BCD

• 
  

  $m<A:21\degree,\ m<B:\ 54\degree,\ m<BCD:75\degree$

• $m<A:75\degree,m<B:21\degree,M<BCD:54\degree$

• $m<A:54\degree,m<B:21\degree,m<BCD:75\degree$

• None of the above

Multiple Choice

Solve for x.

• 12

• 60

• 8

• 10

Multiple Choice

Find the m<D, m<E, m<F

• $m<D=38\degree\ m<E=75\degree\ m<F=67\degree$

• $m<D:65\degree\ m<E:35\degree\ m<F:74\degree$

• $m<D=10\degree,m<110\degree,\ m<80\degree$

• $m<D=35\degree,\ m<E=75\degree,\ m<90\degree$

Multiple Choice

What are the characteristics of an equilateral triangle?

• 2 legs are congruent, 2 angles are congruent

• 3 legs are congruent and 2 angles congruent

• 3 legs are congruent, 3 angles are congruent

Multiple Select

What are the characteristics of an isosceles triangle?

• two legs are congruent

• this triangle has different sides

• base angles are congruent

• this triangle measures exactly 90 degrees.

Multiple Choice

Solve for x.

• 9

• 11

• 7

• 2

Multiple Choice

Solve for x.

• 6

• -10

• 5

• 10

Multiple Choice

The vertex angle of an isosceles triangle is 40 degrees. What is the measure of one base angle?

•  $140\degree$  

•  $70\degree$  

•  $180\degree$  

•  $75\degree$  

Multiple Choice

The degree measure of the vertex angle is (x-21) degrees, the degree for each base angle is (2x+17) degree. What is the value of one of the base angle?

• 25

• 18

• -12

• 67