Question

Problem 3a)triangle has two angles that measure 50, and 90 degrees.The measurement of the other angle isdegrees.b) A quadrilateral has three angles that measure 80. 100 and 30

Answer 1

a)

Let x, be the missing angle.

We know the sum of the internal angles of a triangle is 180°; then:

50° + 90° + x = 180°

x = 180° - 50° - 90°

x = 40°

b)

Let x, be the missing angle.

We know the sum of the internal angles of a quadrilateral is 360°; then:

80° + 100° + 30° + x = 360°

x = 360° - 80° - 100° - 30°

x = 150°