To prove a triangle is isosceles without the measures of each side, you need to know the:
A. Median only
B. Altitude only
C. Median and altitude
D. Centroid and orthocenter

The coordinate grid shows points a through k. which points are solutions to the system of inequalities listed below? 2x+ ys 10 2x 4y < 8 oa c, d, k o e, f. g, j oa, c, d, h, k oe, f. g, h, j

Solve the system of equations. y= 2x y= x^2 - 15

What is the equation of a vertical line passing through the point (−5, −1)? y = −5 y = −1 x = −5 x = −1