2 years ago

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

Answer:

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

Step-by-step explanation:

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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