A quadrilateral shape has angles of 60, 75, and 105 degrees. How many degrees is the fourth angle?

All interior angles in a quadrilateral add up to 360 degrees. Adding up what we know so far 60 + 75 + 105 = 240. So the fourth angle must be 360 - 240 which equals 120 degrees.

PB
Answered by Priti B. Maths tutor

5909 Views

See similar Maths KS3 tutors

Related Maths KS3 answers

All answers ▸

Solve Simultaneous equations: 3x + 4y = 23 & 2x + 3y = 16


Line L1 is y = 4x + 5, line L2 is 4y - 16x -2 = 0. Show that the lines are parallel to each other


Do particles expand when heated?


Anton, Barbara and Clive are buying pens from the shop. Anton needs 4, Barbara needs 7, Clive needs 11. Pens only come in packs of 10. How many packs of pens do they need to buy between them?


We're here to help

contact us iconContact usWhatsapp logoMessage us on Whatsapptelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

© MyTutorWeb Ltd 2013–2025

Terms & Conditions|Privacy Policy
Cookie Preferences