Question

measuring length and angles
instruction active
classifying angles
a goniometer may be used to measure the range of motion of a joint.
in the picture, the angle made by the goniometer is classified as a(n)
<θ<

Explanation:

Step1: Recall angle classification

Angles are classified as acute (less than 90°), right (90°), obtuse (greater than 90° and less than 180°), straight (180°), or reflex (greater than 180°). From the image, the goniometer angle (θ) at the knee joint appears to be greater than 90° and less than 180°, so it's obtuse.

Step2: Determine inequality

For an obtuse angle, the inequality is \( 90^\circ < \theta < 180^\circ \).

Answer:

obtuse; \( 90 \); \( 180 \)