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Need help on these 2 for geometry
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7 votes
Need help on these 2 for geometry

Need help on these 2 for geometry-example-1
User Vojislav Kovacevic
by
4.5k points

1 Answer

7 votes

Answer:

7. 69° 8. 118°

Explanation:

to know

- isosceles triangles have the base angles congruent

- the sum of angles in a triangle is 180

180 -42 = 138 sum of the two base angles

138 /2 = 69 is one base angle

31*2 = 62 are the 2 base angles

180 -62 = 118° vertex angle

User Rohitashv Singhal
by
4.9k points
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