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What type of triangle is this?

What is the measure of the base angles of the triangle?

What type of triangle is this? What is the measure of the base angles of the triangle-example-1
User AveryLiu
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1 Answer

5 votes

Answer:

Isoceles triangle

40°

Explanation:

You see the two lines on each side of the triangle, that means it's parallel. Isoceles triangles have 2 parallel sides and 2 same angles.

Angles in a triangle add to 180°, so 180-100=80°.

We know both angles are the same size because they are parallel, so 2x = 80°

1 angle must = 40° then

User Stefan Magnuson
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