# What does a triangle measure to?

The 3 interior angles of any triangle always add up to 180 degrees

### If the vertex of an isosceles triangle has a measure of 70 what is the measure of one base angle?

If the vertex of an isosceles triangle has a measure of 70° what is the measure of one base angle ANSWER: Isosceles = 2 legs, 1 vertex, 1 base Triangle = 180° if its vertex measure 70° , 1 leg ____? + 1 leg____? =180° and all isosceles triangle has congruent legs. 180° - 70° =110° then 110° divided by 2 =55° =vertex of an isosceles triangle measure 70° and its 2 legs measure 55°