Question

In Parallelogram AB CD, find Angle B, Angle C, Angle D​

Answer 1

Step-by-step explanation:

In any parellelogram ABCD,

there are two facts that are always true:

The sum of the angles is always 360° (true for all convex quadrilaterals)∠A=∠C , and ∠B=∠D By corollary this means that 2B+2C=360°; B+C=180°.

This property is what makes the opposite sides of a parellelogram parallel, as any polygon with two consecutive angles adding to 180° will have two parallel sides.If B=C that gives us:B+C=2B=180°B=90°And so if you have a parallelogram with two consecutive angles equal, you In any parellelogram ABCD, there are two facts that are always true:

In any parellelogram ABCD, there are two facts that are always true:The sum of the angles is always 360° (true for all convex quadrilaterals)

In any parellelogram ABCD, there are two facts that are always true:The sum of the angles is always 360° (true for all convex quadrilaterals)∠A=∠C , and ∠B=∠D

In any parellelogram ABCD, there are two facts that are always true:The sum of the angles is always 360° (true for all convex quadrilaterals)∠A=∠C , and ∠B=∠D By corollary this means that 2B+2C=360°; B+C=180°.

This property is what makes the opposite sides of a parellelogram parallel, as any polygon with two consecutive angles adding to 180° will have two parallel sides.

This property is what makes the opposite sides of a parellelogram parallel, as any polygon with two consecutive angles adding to 180° will have two parallel sides.If B=C that gives us:

This property is what makes the opposite sides of a parellelogram parallel, as any polygon with two consecutive angles adding to 180° will have two parallel sides.If B=C that gives us:B+C=2B=180°

This property is what makes the opposite sides of a parellelogram parallel, as any polygon with two consecutive angles adding to 180° will have two parallel sides.If B=C that gives us:B+C=2B=180°B=90°

This property is what makes the opposite sides of a parellelogram parallel, as any polygon with two consecutive angles adding to 180° will have two parallel sides.If B=C that gives us:B+C=2B=180°B=90°And so if you have a parallelogram with two consecutive angles equal, you have a rectangle.

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Answer 2

Step-by-step explanation:

Given , ∠A=80०

Here , ∠A+∠B=180०

∠B=180०-80०

∠B=100०

The opposite angles of a parallelogram are equal.

Hence ,

∠C=∠A=80०

∠B=∠D=100०...