If you're seeing this message, it means we're having trouble loading external resources on our website.

If you're behind a web filter, please make sure that the domains *.kastatic.org and *.kasandbox.org are unblocked.

Main content

Geometry (FL B.E.S.T.)

Course: Geometry (FL B.E.S.T.) > Unit 5

Lesson 3: Proofs of general theorems
Math
Geometry (FL B.E.S.T.)
Relationships in triangles and quadrilaterals
Proofs of general theorems
© 2023 Khan AcademyTerms of usePrivacy PolicyCookie Notice

Line and angle proofs

CCSS.Math: HSG.CO.C.9
Google Classroom

Problem

T, V, with, \overleftrightarrow, on top is parallel to W, X, with, \overleftrightarrow, on top.
Parallel lines T V and W X. On line T V, there is a point U. On Line W X, there is a point Y. Line segment W U is perpendicular to line T V. Line segment V Y is perpendicular to line W X. There is a transversal line through points W and V.
Cody constructed:
  • start overline, W, U, end overline perpendicular to T, V, with, \overleftrightarrow, on top such that U is on T, V, with, \overleftrightarrow, on top
  • start overline, V, Y, end overline perpendicular to W, X, with, \overleftrightarrow, on top such that Y is on W, X, with, \overleftrightarrow, on top
Cody noticed that triangle, U, W, V, \cong, triangle, Y, V, W using the Hypotenuse-Leg congruency postulate.
What theorem can Cody prove using these congruent triangles?
Choose 1 answer:
Stuck?
Stuck?