High School Geometry

What’s inside

• In a triangle, two angles measure 48° and 67°. What is the measure of the third angle?
• Which condition is sufficient to prove that two triangles are similar?
• A right triangle has legs of lengths 9 and 12. What is the length of its hypotenuse?
• What is the equation of the line passing through (2, 3) and (6, 11)?
• A circle has radius 6 cm. What is its circumference in terms of π?
• A rectangular prism measures 4 units by 5 units by 9 units. What is its volume?
• The diagonals of every parallelogram are congruent.
• If two lines are perpendicular, their slopes are negative reciprocals of each other, provided both slopes are defined.