Question

A triangle has angel measurements of 78°, 90°, and 12°. what kind of triangle is it?​

Answer 1

Right-angled triangle.

Explanation:

Right-angled triangles have one angle measuring 90° and two other complementary angles (i.e angles that add up to 90°).

Answer 2

Right triangle

Explanation:

One of the angles of the triangle is equal to 90 degrees. A 90 degree angle is a right angle. That makes it a right triangle.