7.2 angle relationships in quadrilaterals …...7.2 angle relationships in quadrilaterals...
TRANSCRIPT
![Page 1: 7.2 Angle Relationships in Quadrilaterals …...7.2 Angle Relationships in Quadrilaterals new.notebook March 19, 2017 Ex. 2 A parallelogram is inscribed in a quadrilateral as shown](https://reader035.vdocuments.us/reader035/viewer/2022063020/5fe322147905ce79a105c80f/html5/thumbnails/1.jpg)
7.2 Angle Relationships in Quadrilaterals new.notebook March 19, 2017
7.2 Angle Relationships in Quadrilaterals
Learning Goals:You will know the sum of interior angles and of exterior angles in quadrilaterals, and use this understanding to solve problems.
![Page 2: 7.2 Angle Relationships in Quadrilaterals …...7.2 Angle Relationships in Quadrilaterals new.notebook March 19, 2017 Ex. 2 A parallelogram is inscribed in a quadrilateral as shown](https://reader035.vdocuments.us/reader035/viewer/2022063020/5fe322147905ce79a105c80f/html5/thumbnails/2.jpg)
7.2 Angle Relationships in Quadrilaterals new.notebook March 19, 2017
7.2 Angle Relationships in Quadrilaterals.
Quadrilaterals are polygons with four sides. Some special ones are:
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7.2 Angle Relationships in Quadrilaterals new.notebook March 19, 2017
a
b c
d
w
xy
z
INTERIOR:a+b+c+d=3600
EXTERIOR:w+x+y+z=3600
The Sum of Interior and Exterior Angles in Quadrilaterals:
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7.2 Angle Relationships in Quadrilaterals new.notebook March 19, 2017
Ex. 1 Find the measure of the unknown angle in each quadrilateral.
a)
b)
A
B
C
560
950980
xD
IF G
HKL
E
J
50o88o
105o
y
![Page 5: 7.2 Angle Relationships in Quadrilaterals …...7.2 Angle Relationships in Quadrilaterals new.notebook March 19, 2017 Ex. 2 A parallelogram is inscribed in a quadrilateral as shown](https://reader035.vdocuments.us/reader035/viewer/2022063020/5fe322147905ce79a105c80f/html5/thumbnails/5.jpg)
7.2 Angle Relationships in Quadrilaterals new.notebook March 19, 2017
Ex. 2 A parallelogram is inscribed in a quadrilateral as shown. Find the value of the unknown.
35o 40o
Some properties of angles in parallelgrams: • Adjacent angles are supplementary (sum of 180o)• Opposite angles are equal
Homework: pg 381 #1ac, 5, 6, 7, 9, 12, 13,