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ahrayia [7]
3 years ago
7

If the measure of arc GH= 90° and the measure of arc EF= 45°, calculate m∠GDH.

Mathematics
1 answer:
user100 [1]3 years ago
6 0

Answer:

∠ GDH = 67.5°

Step-by-step explanation:

The measure of the chord- chord angle GDH is half the sum of the measures of the arcs intercepted by the angle and its vertical angle.

∠ GDH = \frac{1}{2}(GH + EF) = \frac{1}{2} (90 + 45)° = 0.5 × 135° = 67.5°

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