http://www.ck12.org Chapter 6. Polygons and Quadrilaterals
Example C
Findx. All figures are trapezoids with the midsegment.
Answers:
- a)xis the average of 12 and 26.^12 + 226 =^382 = 19
b) 24 is the average ofxand 35.
x+ 35
2= 24
x+ 35 = 48
x= 13c) 20 is the average of 5x−15 and 2x−8.
5 x− 15 + 2 x− 8
2= 20
7 x− 23 = 40
7 x= 63
x= 9Watch this video for help with the Examples above.
MEDIA
Click image to the left for use the URL below.
URL: http://www.ck12.org/flx/render/embeddedobject/52579CK-12 Foundation: Chapter6TrapezoidsB
Concept Problem Revisited
Given an isosceles trapezoid withm^6 B= 38 ◦, find the missing angles.