Question

A triangle has one angle that measures 71° and one angle that measures 19º.

What kind of triangle is it?
OA.
equiangular triangle
ОВ.
isosceles triangle
OC.
right triangle
OD
obtuse triangle

Answer 1

Explanation:

always remember : the sum of all angles in every triangle is always 180°.

therefore, when we get 2 angles, we can calculate the third. in our case

180 - 71 - 19 = 90

so, the third angle is 90°.

and that makes the triangle a right-angled triangle. or short : right triangle.

so, C is the right answer.