Triangle facts

The interior angles of a triangle always sum to

• 180

• 360

• 100

• nothing

Based on the diagram, which statement is true?

• x + y = z

• y + z = w

• x + y + z = w

• x + y = w

Complete the sentence: a(n) ______________ triangle is a type of ____________ triangle.

• isosceles; equilateral

• equilateral; isosceles

• equilateral; scalene

• acute; isosceles

The angles in an equilateral triangle each measure ______ degrees.

• 40

• 45

• 60

• 120

An isosceles triangle has ___________ 2 congruent sides.

• exactly

• at least

• at most

• none of the above

Always, sometimes, never: a triangle has two right angles.

• always

• sometimes

• never

• no thank you

Always, sometimes, never: an isosceles triangle has at least two acute angles.

• always

• sometimes

• never

• again, no thank you

What is this?

• pika

• marmoset

• gerbil

• chinchilla

Assume that BC = AC. Which angles must be congruent.

• A and C

• A and B

• B and C

• none of them are congruent

Always, sometimes, never: the exterior angle of a triangle is obtuse.

• always

• sometimes

• never

• repetez, s'il vous plait.