Jiro is not correct. The equation he is using, 135° - 95° = X°, is not valid in this situation because the angle being broken down into smaller angles is 135°, not 95°.
To find the measure of the unknown smaller angle, Jiro should actually use 135° - 20° - 75° = X°, which simplifies to 40° = X°. Therefore, the measure of the unknown smaller angle is 40°.
Answer
degrees
6 An angle that measures 135° is composed of three smaller angles. Two of the smaller angles measure 20° and 75°. Jiro thinks he can use the equation 135° - 95° = X° to find the measure of the unknown smaller angle.
Is Jiro correct? Explain why or why not.
1 answer