Question

find the measure of angls marked‘?'in each of the following.
step by step explanation
question number 5 (a ,c)
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Answer 1

a) 84°

here

132°+x(let)=180°

x=180°-132°

•°•x=48°

again

48°+48°+y(let)=180

x=180-96

•°•x=84

c)120°

here

ACB=60°(angles of a equilateral triangle)

60°+ACD=180

ACD=180-60

ACD =120

Answer 2

Answer:

a) by angle sum property, 48+48+?=180

= 96+?=180

= ?=96-180

= 84 degree

b) same angle sum property by

$\frac{180}{4x + 2x + 3x} = x = {20}^{.}$

equal to

140 degree

c) equilateral triangle.

therefore, 60-180=120 degree

Step-by-step explanation:

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