Isosceles and Equilateral Triangles Lessons

What is the value of the missing angle?

• 61
• 50
• 60
• 69

Which angle is the vertex angle?

• <C
• <A
• <B

Find x.

• 180
• 57
• 61.5
• 32.7

• A
• B
• C
• D

What does CPCTC stand for?

• Congruent parts of congruent triangles are congruent
• Corresponding parts of congruent triangles are congruent
• Corresponding parts of corresponding triangles are corresponding
• Corresponding parts of congruent triangles are Canadian.

• A
• B
• C
• D

What type of triangle is this?

• Equilateral
• Isosceles
• Scalene
• Obtuse

If two sides of a triangle are congruent, then the _________________ opposite those sides are congruent.

• sides
• vertices
• angles
• measures

• A
• B
• C
• D

What do the angles in an equilateral triangle measure?

• 30, 60, 90
• 60, 60, 60
• 45, 45, 90
• 35, 55, 90