Question

Which image below is an acute triangle?

Triangle A has angles measuring ninety five degrees, forty five degrees, and thirty degrees. Triangle B has angles measuring one hundred degrees, twenty five degrees, and twenty five degrees. Triangle C has angles measuring fifty degrees, sixty five degrees, and sixty five degrees. Triangle D has angles measuring thirty degrees, one hundred ten degrees, and twenty degrees.

Triangle A
Triangle B
Triangle C
Triangle D

Answer 1

Triangle C

Explanation:

An acute angle is less than 90 degrees, Triangle C has angles measuring fifty degrees, sixty five degrees, and sixty five degrees. Those numbers are less than 90 degrees. So Triangle C is an acute angle.