# Math

Which triangle is not possible to construct?
A a right isosceles triangle
B an acute equilateral triangle
C an obtuse scalene triangle
D a right equilateral triangle

This is the second time ive posted but the last thread got confusing

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1. Please study these definitions and pictures of different kinds of triangles.

http://www.mathsisfun.com/definitions/isosceles-triangle.html

Which of your choices is impossible?

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Ms. Sue
2. I already went through trying to draw a 60, 60, 60, 90 triangle with this student.

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