Triangle Angle Theorems Grade 9

Which statement regarding the interior and exterior angles of a triangle is always true? An exterior angle is supplementary to the adjacent interior angle. An adjacent interior angle is supplementary to a remote interior angle. A remote interior angle is congruent to the exterior angle. An exterior angle is supplementary to a remote interior angle.

An exterior angle is supplementary to the adjacent interior angle.

What is the value of h? h = 20 h = 35 h = 55 h = 70

h=55

What is the value of k? k = 28 k = 29 k = 31 k = 42

k=29

Which is a true statement about the diagram? m∠5 + m∠6 = m∠1 m∠3 + m∠4 + m∠5 = 180° m∠1 + m∠2 = 180° m∠2 + m∠3 = m∠5

m∠1 + m∠2 = 180°

Which statement regarding the diagram is true? m∠WXY = m∠YXZ m∠WXY < m∠YZX m∠WXY + m∠YXZ = 180° m∠WXY + m∠XYZ = 180°

m∠WXY + m∠YXZ = 180°

If m∠X = 34° and m∠Z = 26°, what is m∠Y? m∠Y = 26° m∠Y = 34° m∠Y = 60° m∠Y = 120°

m∠Y = 120°

Find the value of x. x = 2 x = 3 x = 33 x = 52

x = 3

What is the value of x? [Art not to scale.] x = 23 x = 35 x = 58 x = 93

x = 93

Which statement about the value of x is true? x > 38 x < 39 x < 77 x > 103

x > 38

Which angle has a measure equal to the sum of m∠SQR and m∠QRS? ∠RSC ∠SRE ∠DQS ∠QSR

∠RSC