PLZ HELP The measures of two angles of a triangle are 25° and 87°. Is the triangle acute, right, or obtuse? Explain.

A.

Acute; the measure of the third angle is 68°. So all three angles are acute.

B.

Acute; the measure of the third angle is 78°. So all three angles are acute.

C.

Obtuse; 25° + 87° = 112° and 112° is an obtuse angle.

D.

Right; 25° + 87° = 112° and 202°

−

112° = 90°.

i think 1: 2

step-by-step explanation:

you forgot an image

step-by-step explanation:

i found two solutions,   n = 2 • ± √3 = ± 3.4641

step-by-step explanation:

c. y = 1/4 x + 5

step-by-step explanation:

first, put the equation of the line on the graph into slope-intercept form

(y = mx + b):   y = -4x + 8

second, a perpendicular line has to have "an opposite/reciprocal slope" to the original slope. so, find the "m" value in your original equation (it's -4, right? )

original slope: m = -4   perpendicular slope: change the sign to its opposite and find the reciprocal ("flip" the number)

new slope is now positive (b/c the original slope was negative 4), and it's 1/4 (not the original slope of 4 or 4/1)