Match the vocabulary word to the definition. use the word bank. you will not use all the words in the word bank.
the line that goes all the way across a circle, through the center.
two angles whose sum is 90 degrees. a triangle with one angle greater than 90 degrees. two angles that share a side.
two angles whose sum is 180 degrees.

word bank

obtuse triangle adjacent angles complementary angles
supplementary angles vertical angles radius
diameter circumference acute triangle