Isosceles Triangle Geometry

Which angle is the vertex angle?

• <C

• <A

• <B

Which segment is the base?

• Segment AB

• Segment BC

• Segment AC

Which would be the best classification for the triangle shown?

• acute isosceles

• obtuse scalene

• obtuse isosceles

• acute scalene

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

• sides

• vertices

• angles

• measures

Find x.

• 180

• 57

• 61.5

• 32.7

• 12

• 11

• 8

• 6

Find z

• 86

• 68

• 44

• 34

Which would be the best classification for the triangle shown?

• right isosceles

• obtuse scalene

• obtuse isosceles

• right scalene

If a triangle has one angle exactly 90° and two equal sides, what type of triangle is it?

• Right Isosceles

• Acute Scalene

• Obtuse Scalene

• Obtuse Isosceles

Find the measure of angle A

• 36

• 72

• 144

• 108