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ohaa [14]
2 years ago
13

Help me with this. Calculate angles in a triangle

Mathematics
2 answers:
kakasveta [241]2 years ago
8 0

Step-by-step explanation:

Total Angle in a triangle is 180°

so D = 140 + 25 = 165°

D = 190° - 165° = 15°

Your answer is 15°.

lesya692 [45]2 years ago
4 0

<u>Answer:</u>

angle d = \boxed{15}^ {\circ}

<u>Step-by-step explanation:</u>

The angles in a triangle add up to 180°.

∴ ∠d + 25° + 140° = 180°

⇒ ∠d + 165° = 180°

⇒ ∠d = 180° - 165°

⇒ ∠d = 15°

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