Equilateral & Isosceles Triangles

When an isosceles triangle has exactly two congruent sides, these two sides are the ___________________

• legs

• vertex angles

• bases

• base angles

• complementary

Tags

CCSS.HSG.CO.C.11

The angle formed by the legs of an isosceles triangle is the _____________ angle.

• base

• vertex

• acute

• equiangular

• complementary

The third side of the isosceles triangle is the ____________.

• leg

• base

• vertex angle

• base angle

• equilateral

If two angles of a triangle are congruent, then the sides opposite them are ____________________.

• complementary

• adjacent

• supplementary

• congruent

Tags

CCSS.HSG.CO.C.9

If a triangle is equilateral, then it is _____________________.

• complementary

• supplementary

• vertex

• acute

• equiangular

Tags

CCSS.4.G.A.2

Find the value of x and choose the theorem you used to find the value.

• x = 50

• x = 25

• x = 30

• by the Base Angles Theorem

• by the Converse to the Base Angles Theorem

Tags

CCSS.8.G.A.5

Find the value of x and choose the correct theorem used to find the value.

• x = 6

• x = 4

• x = 5

• by the Base Angles Theorem

• by the Converse to the Base Angles Theorem

Tags

CCSS.8.G.B.8

Find the values of x and y.

• x = 20

• x = 40

• x = 30

• y = 25

• y = 30

Tags

CCSS.HSG.SRT.B.4

Find the values of x and y.

• x = 30

• x = 60

• x = 15

• y = 20

• y = 4

Tags

CCSS.HSG.CO.C.9

Find the value of x.

• x = 18

• x = 72

• x = 36

• x = 20