3 years ago

A pentagon has angle measures of 105°, 101°, 112° and 113°. What must the fifth angle measure?

2 answers:

8 0

Add them. Pentagram interior angle is 540. 105+101+112+113=431. 540-431=109 Hence, 109 is the answer. Please brainliest.

7 0

Answer:

109

Step-by-step explanation:

Pentagon can be represented with 3 triangles:

A+B+C+D+E=3×180

105+101+112+113+E=540 => E=109

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