Question

EG/C- VII/T 1/ U 5/S14/Geometry/WS

Section II

1. Do the following:

1. Given that AB is a straight line. Calculate the value of x° in the following .



Solution:

Given AB is a straight line ,

(Therefore, Sum of all the angles formed at a point on a straight line is 180°).

AOC + BOC = 180°

___ + ____ = 180° [the two angles are 3x and 42°]

3x = 180° − _____

3x = _____

x = _____

x = _____

2. If the three angles at a point are in the ratio 1: 4 : 7,find the value of each angle.

Solution:

Let the angles be 1x ,4x, and 7x.

3x°

42°

A

C

O B

X =​

Answer 1

Answer:

gah

Step-by-step explanation:

n

jmmvdhn ztlpjobmcd