Question

A right triangle has one angle that measures 70°. what is the measure of the other acute angle?

Answer 1

Answer: 20°

Step-by-step explanation:

Right triangle means one angle is 90°

One angle is given, 70°

A triangle adds up to 180°

90° + 70° + X = 180°

160° + X = 180°

X = 20°

Answer 2

1. A right triangle is a triangle with an angle measuring 90 degrees

2. 3 angles in a triangle add up to 180 degrees

We have the measurements of 2 angles, and because of 2., we can find the measure of the other acute angle : 180 - 90 - 70 = 20 degrees.