Answer:
Given: ABCD is a parallelogram.
Prove: Angle A and B are supplementary and C and D are supplementary.
That is, m∠A + m∠B = 180° and m∠C + m∠D = 180°
Statement Reason
1. ABCD is a parallelogram 1. Given
2.m∠A=m∠C and m∠B=m∠D 2. Definition of parallelogram.
3.m∠A+m∠B+m∠C+m∠D=360° 3. Definition of quadrilateral
4. m∠A+m∠B+m∠A+m∠B=360° 4. By substitution
⇒ 2( m∠A + m∠B ) = 360°
⇒ m∠A + m∠B = 180°
Similarly, m∠C + m∠D = 180°
5.∠A and ∠C are supplementary, 5. Def. of Supplementary
∠ B and ∠D are supplementary
Answer:
is this good?? i mean is it correct
Answer: 0.11 (bar notation)
Step-by-step explanation:
Answer:
x = 90 , y = 43
Step-by-step explanation:
Since AB and AC are congruent , then Δ ABC is isosceles with base angles congruent , that is
∠ ABD = ∠ ACD = 47°
AD is the perpendicular bisector of BC , so
∠ ADB = x = 90
the sum of the 3 angles in Δ ABD = 180° , then
y = 180° - (90 + 47) = 180 - 137 = 43
Answer:
71 -h
Step-by-step explanation:
The player had 71 -h hits in the rest of the games.
_____
In case you cannot write down this answer right away, you can figure it this way. Let r represent the hits the player got in the rest of the games. Then the player's total of hits for the season was ...
r + h = 71
Subtracting h from both sides of this equation tells us what r was:
r +h -h = 71 -h
r = 71 -h . . . . . . . hits in the rest of the games
The player had 71 -h hits in the rest of the season.
