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4 years ago

Can someone help me

Mathematics

1 answer:

NemiM [27]4 years ago

3 0

Answer:

x = 115°

Step-by-step explanation:

The sum of the 3 angles in a triangle = 180°, thus

To find the third angle in the triangle subtract the sum of the 2 given angles from 180, that is

∠BEC = 180° - (90 + 25)° = 180° - 115° = 65°

Now

∠DEB and ∠BEC form a straight angle and are supplementary, hence

x = ∠DEB = 180° - 65° = 115°

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