The problem asks to find the measure of angle D in a kite ABCD, where angle A is $36^{\circ}$ and angle C is $70^{\circ}$.

GeometryKiteAnglesQuadrilateralsAngle Sum Property
2025/3/13

1. Problem Description

The problem asks to find the measure of angle D in a kite ABCD, where angle A is 3636^{\circ} and angle C is 7070^{\circ}.

2. Solution Steps

A kite is a quadrilateral. The sum of the interior angles of any quadrilateral is 360360^{\circ}. In a kite, one diagonal is the perpendicular bisector of the other. Also, a kite has two pairs of adjacent sides that are congruent. Moreover, the angles between non-congruent sides are congruent. In kite ABCD, since AB = BC, and AD = CD, we have D=B\angle D = \angle B.
We know that the sum of the interior angles of a quadrilateral is 360360^{\circ}. Thus,
A+B+C+D=360\angle A + \angle B + \angle C + \angle D = 360^{\circ}.
Given that A=36\angle A = 36^{\circ} and C=70\angle C = 70^{\circ}, and also B=D\angle B = \angle D, we can substitute these values into the equation:
36+B+70+D=36036^{\circ} + \angle B + 70^{\circ} + \angle D = 360^{\circ}.
Since B=D\angle B = \angle D, let B=D=x\angle B = \angle D = x.
36+x+70+x=36036^{\circ} + x + 70^{\circ} + x = 360^{\circ}.
2x+106=3602x + 106^{\circ} = 360^{\circ}.
2x=3601062x = 360^{\circ} - 106^{\circ}.
2x=2542x = 254^{\circ}.
x=2542x = \frac{254^{\circ}}{2}.
x=127x = 127^{\circ}.
Therefore, D=127\angle D = 127^{\circ}.

3. Final Answer

mD=127m\angle D = 127^{\circ}

Related problems in "Geometry"

The image presents three problems. Let's focus on the first and third problems, as problem two depen...

VolumeConeSurface AreaPyramidArea Calculation
2025/4/17

The problem asks us to find the volume of a composite solid consisting of a cone and a hemisphere. T...

VolumeConeHemisphereComposite Solid3D GeometryApproximationUnits Conversion
2025/4/16

A spherical fountain has a radius of 1.5 feet. Find the volume of the fountain to the nearest tenth...

VolumeSphereRadiusApproximationUnits
2025/4/16

The problem asks us to find the volume of a funnel, which is in the shape of a cone. The radius of t...

ConeVolumePythagorean Theorem3D GeometryMeasurement
2025/4/16

A pyramid has a height of 18 centimeters and a base with an area of 26 square centimeters. We need t...

VolumePyramid3D Geometry
2025/4/16

The problem states that a company makes spherical wax candles. Each candle has a diameter of 18 cm. ...

VolumeSphereCalculation
2025/4/16

A company makes chocolate candies in the shape of a solid sphere. Each candy has a diameter of 9 cm....

VolumeSphere3D GeometryCalculation
2025/4/16

We are asked to find the volume of a sphere with a radius of $9.1$ cm. We should not round any inter...

VolumeSphere3D GeometryFormula ApplicationApproximationUnits
2025/4/16

We need to find the volume of a cone with a diameter of 8 cm and a slant height of 12 cm. The final ...

VolumeConePythagorean Theorem3D GeometryMeasurementApproximationRadiusHeightSlant Height
2025/4/16

We need to find the volume of a cone with diameter 12 cm and height 12 cm. We need to round the answ...

VolumeConeGeometric FormulasMeasurementApproximation
2025/4/16