QHome Spring 2020 Major arc JL measures 300

Which describes triangle JLM?

300

right

obtuse

K

M.

scalene

O equilateral

(D)Equilateral Triangle

Step-by-step explanation:

Given a circle centre M; and

The measure of major arc JL = 300 degrees

The triangle formed by radii ML and MJ and chord JL is Triangle JLM.

Since ML=MJ (radii of a circle), the base angles are equal.

Therefore:

We can see that all the angles of triangle JLM are 60 degrees, therefore Triangle JLM is an Equilateral Triangle.

the first one, all those points on the line just make a strait line.