Skip to content
Exit presentation

Geometric Twins

Checkpoint: order, RHS and angles

Four questions on the last four ideas. Feedback comes right away. Retry whenever you want.

ΔABC ≅ ΔLMN. Which side is equal to BC?

Two right-angled triangles have hypotenuses of 20 cm. Each has a leg of 12 cm. Are they congruent?

An isosceles triangle has a top angle of 110°. What is each base angle?

Which triangle can exist?

0 of 4 answered

Jump to lesson

This track

  1. 0 Start here
  2. 1 Landing one on the other
  3. 2 Slide it, turn it, flip it
  4. 3 A bigger copy is a different figure
  5. 4 One line, one corner
  6. 5 Three sides settle it
  7. 6 Two sides and the corner between them
  8. 7 Two corners and a side
  9. 8 When shape is not enough
  10. 9 Writing a congruence in order
  11. 10 RHS: a right angle, the hypotenuse, a side
  12. 11 Equal sides, equal angles
  13. 12 Twins hiding in a figure
  14. 13 Checkpoint: order, RHS and angles
  15. 14 The big picture
  16. 15 Track quiz

Other tracks