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In the diagram measure angle ACB=61 find measure angle ACEMeasure of angle ACE=...°

In the diagram measure angle ACB=61 find measure angle ACEMeasure of angle ACE=...°-example-1
User ChrisLively
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1 Answer

13 votes
13 votes

From the figure, angle ACB anf angle BCD are complementary, that is,

∠ACB + ∠BCD = 90°

Replacing with data

61° + ∠BCD = 90°

∠BCD = 90° - 61°

∠BCD = 29°

From the picture, angle BCD and angle FCE are vertical angles, then they are congruent, which means that:

∠FCE = ∠BCD = 29°

Angle FCA is a right angle, that is, ∠FCA = 90°. Therefore:

∠FCE + ∠FCA = ∠ACE

29° + 90° = ∠ACE

119° = ∠ACE

User Kreig
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