Question

1. in a trapezium ABCD, side AB is parallel to side DC. "
ZA=
= 78° and C = 120°, find angles B and D.
2. In a trapezium ABCD, side AB is parallel to side DC. I ZA = and D = 3x - 20-
find the value of x
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Answer 1

Answer:

1)

side AB||side DC and side BC is a transversal

angle C+angle B =180⁰.......(interior angle)

120+ B =180

B=180-120

B=60⁰

side AB || side DC and side AD is transversal

A+D=180⁰....(interior angle)

78⁰+D=180⁰

D=180-78

D=102⁰