Identify isosceles triangles

In an isosceles triangle, the angles opposite the sides of equal length are called base angles, the sides of equal length form the vertex angle, and the third side is called the base.

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QUESTION OF
Views #: 2
Questions #: 5
Time: 5 minutes
Pass Score: 80.0%
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Describe an isosceles triangle

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In an isosceles triangle, the angles opposite the sides of equal length are called (1), the sides of equal length form the (2), and the third side is called the (3).

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base angles
base
vertex angle
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Explanation

If two sides of a triangle are congruent, then the angles opposite those sides are congruent

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Correct Answer

Explanation

If two angles of a triangle are congruent, then the sides opposite the angles have the same length, and the triangle is isosceles

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Is the triangle shown here an isosceles triangle?

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A B C 50° 50° 80°

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Is this triangle shown below an isosceles triangle?

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79° 78° 23°

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Explanation

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0
sin cos tan
sin-1 cos-1 tan-1 π e
xy x3 x2 ex 10x
y√x 3√x √x ln log
( ) 1/x % n!
7 8 9 + MS
4 5 6 – M+
1 2 3 × M-
0 . EXP ÷ MR
± RND C = MC
Keywords
Year 4