Question

ACDE is a trapezium made up of 3 isosceles triangles. if angle a= 30° angle b=150°, find the values of angle c and angle d​

Answer 1

Answer: inappropriate or incomplete question

Step-by-step explanation:

angle c +angle d=180 degrees

Answer 2

Given:

a= 30 degree

To find:

The measure of B and C

Answe:

Since one angle is.given [a =30 degree] B=C it is an Isosceles triangle.

In an Isosceles triangle , two angle ar equal.

Since B=C let as take the measure as x

a+x+x=180 degree {Angle sum property}{All angles of a triangle add up to 180 degree}

30°+x+x=180°

30°+2x=180°

2x=180°-30°

2x=150°

x=150°/2

x=75°

Therefor, the measure of angle B and C is 75°

Proof:

Using Angle sum Property , a+b+c=180°

LHS: a+b+c=180°

30°+75°+75°

=180°

=RHS