Circle F is congruent to circle J, and ZEFD = ZGJH.
m ZDFE = 80'. What is the measure of H?
2 answers:
Answer:
50 deg
Step-by-step explanation:
The circles are congruent, so all radii of both circles are congruent.
The given central angles are congruent, so the triangles are congruent by SAS.
Since each triangle has 2 congruent sides (the radii), opposite angles are congruent.
m<DFE = m<J = 80 deg
m<H = m<G = x
m<H + m<G + m<J = 180
x + x + 80 = 180
2x + 80 = 180
2x = 100
x = 50
m<H = 50
Answer:

Step-by-step explanation:
We are given that circle F is congruent to circle J.


We have to find the measure of H.
when two triangles are congruent then their corresponding angles and corresponding sides are congruent.

JH and JG are radius of circle J. Angles made by two equal sides are equal.
In 
Let 
By triangle angles sum property
Substitute the values then we get



Therefore, 
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