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Answered by
1
Answer:
1) 35
Step-by-step explanation:
180-145=35
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Answered by
1
Answer:
1. since triangle abc is congruent to def therefore angle a = angle d = 100° , angle b = angle e = 45°
angle c =angle f = 180° -(100+45) = 180° - 145° = 35°
2. (i ) since triangle abc is congruent to triangle adc therefore ab = ad ( all sides of rhombus are equal ), ab = ac ( all sides of rhombus are equal), ac = ac ( common in both triangles)
( ii ) yes by sss criteria
( iii ) yes because diagonals bisect interior angles
3. ( i ) since triangle abd is congruent to adc therefore ab = ac ( given ) , ad = ad ( common), angle adb = adc = 90°
( ii ) yes by rhs criteria
(iii) yes by cpctc
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